The working around is working adequately for me:

Jul 02 08:50:59 lenny gnome-shell[17639]: Enabling experimental feature 'x11-randr-fractional-scaling'
Jul 02 08:50:59 lenny gnome-shell[17639]: Crtc at 0.000000x2160.000000 size 1920.000000x1080.000000 (@ 2.000000 - adapted 2.000000) considering it of 3840.000000x2160.000000
Jul 02 08:50:59 lenny gnome-shell[17639]: Crtc at 0.000000x0.000000 size 1920.000000x1080.000000 (@ 2.000000 - adapted 2.000000) considering it of 3840.000000x2160.000000
Jul 02 08:50:59 lenny gnome-shell[17639]: Setting screen size 3840x4320
Jul 02 08:50:59 lenny gnome-shell[17639]: Setting screen size to 3840x4320
Jul 02 08:50:59 lenny gnome-shell[17639]: Scaling at 1.000000 (transformation matrix is 65536 = 1.000000) using filter fast
Jul 02 08:50:59 lenny gnome-shell[17639]: Configuring CRTC 504 with mode 509 (3840 x 2160 @ 59.999294) at position 0, 2160 and transform 0
Jul 02 08:50:59 lenny gnome-shell[17639]: Setting UBUNTU crtc config crtc 504, timestamp 0 (config timestamp 158041), x: 0, y: 2160, mode: 509, rotation 1, n_outputs 1: RETURN reply 0x56264b3d7970, error: (nil)
Jul 02 08:50:59 lenny gnome-shell[17639]: Scaling at 1.000000 (transformation matrix is 65536 = 1.000000) using filter fast
Jul 02 08:50:59 lenny gnome-shell[17639]: Configuring CRTC 441 with mode 448 (3840 x 2160 @ 60.000000) at position 0, 0 and transform 0
Jul 02 08:50:59 lenny gnome-shell[17639]: Setting UBUNTU crtc config crtc 441, timestamp 0 (config timestamp 158041), x: 0, y: 0, mode: 448, rotation 1, n_outputs 1: RETURN reply 0x56264b3d7970, error: (nil)
Jul 02 08:51:00 lenny gnome-shell[17639]: Unset XDG_SESSION_ID, getCurrentSessionProxy() called outside a user session. Asking logind directly.
Jul 02 08:51:00 lenny gnome-shell[17639]: Will monitor session 2
Jul 02 08:51:00 lenny gnome-shell[17639]: Telepathy is not available, chat integration will be disabled.
Jul 02 08:51:00 lenny gnome-shell[17639]: Setting screen size 3840x4320
Jul 02 08:51:00 lenny gnome-shell[17639]: Setting screen size 3840x4320
Jul 02 08:51:00 lenny gnome-shell[17639]: Setting screen size 3840x4320
Jul 02 08:51:00 lenny gnome-shell[17639]: Setting screen size 3840x4320
Jul 02 08:51:00 lenny gnome-shell[17639]: Error looking up permission: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for geolocation
Jul 02 08:51:02 lenny gnome-shell[17639]: GNOME Shell started at Thu Jul 02 2020 08:51:00 GMT-0400 (EDT)
Jul 02 08:51:02 lenny gnome-shell[17639]: Registering session with GDM
Jul 02 08:52:08 lenny gnome-shell[17639]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Jul 02 08:52:23 lenny gnome-shell[17639]: ../clutter/clutter/clutter-actor.c:10556: The clutter_actor_set_allocation() function can only be called from within the implementation of the ClutterActor::allocate() virtual function.
Jul 02 08:52:28 lenny gnome-shell[17639]: GOt configuration change [(0, 2160, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 2.0, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:52:29 lenny gnome-shell[17639]: GOt configuration change [(0, 2160, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 2.0, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:52:29 lenny gnome-shell[17639]: GOt configuration change [(0, 2160, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 2.0, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:52:30 lenny gnome-shell[17639]: GOt configuration change [(0, 2160, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.0, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:52:32 lenny gnome-shell[17639]: GOt configuration change [(0, 2160, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.0, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:52:32 lenny gnome-shell[17639]: Setting screen size 3840x4320
Jul 02 08:53:36 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:36 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:36 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:38 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.0, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:40 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.5, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:40 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.5, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:40 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.5, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:49 lenny gnome-shell[17639]: GOt configuration change [(0, 2880, 1.5, uint32 0, false, [('eDP-1-1', '3840x2160@59.999294281005859', {'underscanning': <false>})]), (0, 0, 1.5, 0, true, [('HDMI-0', '3840x2160@60', {'underscanning': <false>})])]
Jul 02 08:53:49 lenny gnome-shell[17639]: Crtc at 0.000000x2880.000000 size 2560.000000x1440.000000 (@ 1.500000 - adapted 2.000000) considering it of 5120.000000x2880.000000
Jul 02 08:53:49 lenny gnome-shell[17639]: Crtc at 0.000000x0.000000 size 2560.000000x1440.000000 (@ 1.500000 - adapted 2.000000) considering it of 5120.000000x2880.000000
Jul 02 08:53:49 lenny gnome-shell[17639]: Setting screen size 5120x5760
Jul 02 08:53:49 lenny gnome-shell[17639]: Setting screen size to 5120x5760
Jul 02 08:53:49 lenny gnome-shell[17639]: Scaling at 0.750000 (transformation matrix is 87381 = 1.333328) using filter good
Jul 02 08:53:49 lenny gnome-shell[17639]: Configuring CRTC 504 with mode 509 (3840 x 2160 @ 59.999294) at position 0, 2880 and transform 0
Jul 02 08:53:49 lenny gnome-shell[17639]: Setting UBUNTU crtc config crtc 504, timestamp 0 (config timestamp 158041), x: 0, y: 2880, mode: 509, rotation 1, n_outputs 1: RETURN reply 0x56264d8f3170, error: (nil)
Jul 02 08:53:49 lenny gnome-shell[17639]: Scaling at 0.750000 (transformation matrix is 87381 = 1.333328) using filter good
Jul 02 08:53:49 lenny gnome-shell[17639]: Configuring CRTC 441 with mode 448 (3840 x 2160 @ 60.000000) at position 0, 0 and transform 0
Jul 02 08:53:51 lenny gnome-shell[17639]: Setting UBUNTU crtc config crtc 441, timestamp 0 (config timestamp 158041), x: 0, y: 0, mode: 448, rotation 1, n_outputs 1: RETURN reply 0x562653a79a60, error: (nil)
Jul 02 08:53:52 lenny gnome-shell[17639]: Setting screen size 5120x5760
Jul 02 08:53:52 lenny gnome-shell[17639]: Setting screen size 5120x5760
Jul 02 08:53:52 lenny gnome-shell[17639]: Setting screen size 5120x5760