VSCode does not retrieve SSH passphrase from kwallet/ksshaskpass

[Rua]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.97.2 (not installed via flatpak)
• OS Version: Fedora 41 with KDE 6.3 / NixOS 24.11 with KDE 6.2

ssh-agent is automatically started on boot. I have SSH set up to use kwallet via ksshaskpass:

$ echo $SSH_ASKPASS
/usr/bin/ksshaskpass
$ echo $SSH_ASKPASS_REQUIRE 
prefer

My SSH key uses a passphrase. If I go to a Git repository and do git pull on the terminal, then if the passphrase is already in kwallet, it will immediately perform the operation. Otherwise, the ksshaskpass window pops up to ask for the passphrase. It asks for the passphrase only once, and remembers it even after a restart.

In VSCode, however, if I use the GUI to pull from the same repo, then I get a popup asking me for the passphrase. I can fill it in and it works, but each time I perform a Git operation, it asks me again. It does not remember the passphrase at all, not even within the same session. I can, however, run git pull or whatever in the terminal within VSCode, and that works. Only the VSCode GUI doesn't store/retrieve the passphrase.

If I run ssh-add, then run VSCode, then VSCode will successfully retrieve the passphrase and will not prompt for it. But that only lasts for the current boot, it will not remember after a restart.