Same issue, not as severe regarding disk space. No extensions active.

# NOTE: will only grep first line of stacktracce
journalctl -m | grep osdWindow.js | wc -l
3597

gnome-shell --version
GNOME Shell 3.28.3

Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a64961dc90), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a647bf04e0), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a645fdf090), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a649204c40), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a644e107e0), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:206 (0x7f8f286c7780 @ 231) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:207 (0x7f8f286c7780 @ 273) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a644e10d80), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a646d64620), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a645ed92d0), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:206 (0x7f8f286c7780 @ 231) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:207 (0x7f8f286c7780 @ 273) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:206 (0x7f8f286c7780 @ 231) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:207 (0x7f8f286c7780 @ 273) 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a648ee0040), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:206 (0x7f8f286c7780 @ 231) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:207 (0x7f8f286c7780 @ 273) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:206 (0x7f8f286c7780 @ 231) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a647f06850), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: == Stack trace for context 0x55a6441b7330 == 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #0 0x7ffd21e60e00 b   resource:///org/gnome/shell/ui/osdWindow.js:207 (0x7f8f286c7780 @ 273) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #1 0x7ffd21e60e60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #2 0x7ffd21e60f20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #3 0x7ffd21e61010 b   resource:///org/gnome/gjs/modules/signals.js:128 (0x7f8f3c2d2230 @ 386) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #4 0x55a644565880 i   resource:///org/gnome/shell/ui/layout.js:531 (0x7f8f286042b8 @ 127) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #5 0x7ffd21e61c60 I   resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7f8f3c2b5de0 @ 71) 
Oct  8 11:15:02 computer org.gnome.Shell.desktop[2515]: #6 0x7ffd21e61d20 b   self-hosted:916 (0x7f8f3c2f12b8 @ 367) 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a64961dc90), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a647bf04e0), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.Icon (0x55a645fdf090), has been already finalized. Impossible to set any property to it. 
Oct  8 11:15:02 computer gnome-shell[2515]: Object St.BoxLayout (0x55a649204c40), has been already finalized. Impossible to set any property to it.