Thank you for your bug report. It's a GTK4 issue, the gnome-text-editor deb has the same problem
** Summary changed: - [snap] Firefox Save File Unable To Paste Into Filename + Fileselector Unable To Paste Into Filename ** Package changed: firefox (Ubuntu) => gtk4 (Ubuntu) ** Changed in: gtk4 (Ubuntu) Importance: Undecided => Low ** Changed in: gtk4 (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1971532 Title: Fileselector Unable To Paste Into Filename Status in gtk4 package in Ubuntu: Confirmed Bug description: related to a few other bug reports: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1970168 Save File prompt disallows paste to filename. Attached is a screenshot of what pops up. Tested in various directories. Info: lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 22.04 LTS Release: 22.04 Codename: jammy uname -a Linux j5awry-sys76 5.15.0-27-generic #28-Ubuntu SMP Thu Apr 14 04:55:28 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux snap version snap 2.55.3+22.04ubuntu1 snapd 2.55.3+22.04ubuntu1 series 16 ubuntu 22.04 kernel 5.15.0-27-generic snap info firefox name: firefox summary: Mozilla Firefox web browser publisher: Mozillaâś“ store-url: https://snapcraft.io/firefox contact: https://support.mozilla.org/kb/file-bug-report-or-feature-request-mozilla license: unset description: | Firefox is a powerful, extensible web browser with support for modern web application technologies. commands: - firefox snap-id: 3wdHCAVyZEmYsCMFDE9qt92UV8rC8Wdk tracking: latest/stable refresh-date: 21 days ago, at 14:48 CDT ... installed: 99.0.1-1 (1232) 163MB - (tracking latest/stable) Reproduction: Download a file to get file prompt Cut the name attempt to paste the name back in Reproducible when targeting ~/Downloads, ~/Documents, and /tmp To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk4/+bug/1971532/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp