User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:103.0) Gecko/20100101 Firefox/103.0

Steps to reproduce:

Using Firefox flatpak 103.0.2 with Ubuntu 20.04 on Wayland.

• Wanted to comment on a Github issue
• Wanted to add a screenshot to describe the issue
• Took PNG screenshot and saved it to local /tmp/ directory
• Github only offers drag & drop to their Markdown comment form textarea and no "upload" file chooser
• Dragged the file from Nautilus to the Github textarea field and dropped it there.

Actual results:

• Nothing.
• Firefox just ignored the dropped file.
• Workaround was to copy the image file to the ~/Downloads/ folder, from which drag & drop works as expected.

Expected results:

• Firefox should accept a dragged and dropped image file if the user chooses to drag a file from a different location than ~/Downloads/

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

If the user drags & drops a file to Firefox, that should be considered the user's stated desire that the file's location should be made accessible to the flatpak security portal's permissions.