Several people have noticed issues with the AppImage binaries - these are new with 1.96 and we certainly appreciate the feedback (e.g. Teething troubles with 1.96 AppImage)
I would guess Ubuntu packages should appear fairly soon - I see there’s a 1.96 build for Kinetic already, so I would anticipate @RizzerOnGitHub or others with debichem will have a build for Jammy: