When running firefox from the terminal, I get:
[Parent 6541, Main Thread] WARNING: Unable to connect to ibus: Could not connect: No such file or directory: 'glib warning', file /build/firefox/parts/firefox/build/toolkit/xre/nsSigHandlers.cpp:167
This looks similar to bug #2008279. The symptoms are similar, that is, all text input to firefox is discarded or doesn't reach firefox.
I do not have the skill to pinpoint the bug, but I am happy to try any suggested experiments.
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ProblemType: Bug
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 23.04
InstallationDate: Installed on 2019-05-03 (1451 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Package: snapd 2.59.1+23.04ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Tags: lunar wayland-session
Uname: Linux 6.2.0-20-generic x86_64
UpgradeStatus: Upgraded to lunar on 2023-04-23 (0 days ago)
UserGroups: adm audio cdrom dip docker lpadmin nix-users plugdev sambashare sudo
_MarkForUpload: True
---
ProblemType: Bug
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 23.04
InstallationDate: Installed on 2019-05-03 (1451 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Package: libglib2.0-0 2.76.1-1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Tags: lunar wayland-session
Uname: Linux 6.2.0-20-generic x86_64
UpgradeStatus: Upgraded to lunar on 2023-04-23 (0 days ago)
UserGroups: adm audio cdrom dip docker lpadmin nix-users plugdev sambashare sudo
_MarkForUpload: True
apport information