I ran "journalctl --user" after the last flicker and this is the output from the time around the flicker
Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.077664:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response.
Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.078033:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response.
Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.084532:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response.
Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.084847:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response.
I can post the full multi-day output of journalctl --user if that would be useful to you all.
I ran "journalctl --user" after the last flicker and this is the output from the time around the flicker
Sep 12 20:12:34 shadeball org.gnome. Shell.desktop[ 5959]: [1:1:0912/ 201234. 077664: ERROR:child_ process_ sandbox_ support_ impl_linux. cc(81)] FontService unique font name matching request did not receive a response. Shell.desktop[ 5959]: [1:1:0912/ 201234. 078033: ERROR:child_ process_ sandbox_ support_ impl_linux. cc(81)] FontService unique font name matching request did not receive a response. Shell.desktop[ 5959]: [1:1:0912/ 201234. 084532: ERROR:child_ process_ sandbox_ support_ impl_linux. cc(81)] FontService unique font name matching request did not receive a response. Shell.desktop[ 5959]: [1:1:0912/ 201234. 084847: ERROR:child_ process_ sandbox_ support_ impl_linux. cc(81)] FontService unique font name matching request did not receive a response.
Sep 12 20:12:34 shadeball org.gnome.
Sep 12 20:12:34 shadeball org.gnome.
Sep 12 20:12:34 shadeball org.gnome.
I can post the full multi-day output of journalctl --user if that would be useful to you all.