Comment 12 for bug 2022851

Christians, I am unable to reproduce that issue. Ctrl+ left mouse click does work to select multiple files in Nautilus for me with gtk 4.10.4+ds-0ubuntu1.

I suggest you follow my suggestion in the previous comment to ensure that you have all the binaries of gtk4 instead of just libgtk-4-1. That may not fix your issue at all, but it's best to have all the parts of gtk4 at the same version anyway.

If you still have the issue. Please report a new bug using the command

ubuntu-bug libgtk-4-1

Then leave a comment here with the bug number.