There are also multiple file pickers (Qt/GTK) and they don't share history or recent file list. Also in GTK picker if I select an existing file on Save by accident, I can't unselect it and I have to write filename again manually myself or close the picker and try again. This is annoying, time-consuming and frustrating.

File pickers are one of the things I don't like on GNU/Linux unfortunatelly, saying that as someone who daily uses it as a primary platform.

MacOS and Windows file pickers work better.