Qt shouldn't be using the portal to open folders

Hi, sorry I'm a total noob and may have tagged this wrong. Basically, I have a Qt program that launches a File Chooser dialog. The user must be able to choose a folder. Not a file.

This works when I compile the program normally. But when I compile a Flatpak or Snap, I cannot choose a folder, only a file. I opened an issue against Flatpak and they said this is a Qt bug. Qt is trying to open a xdg-desktop-portal even though the spec doesn't seem to support folder choosers, only file choosers.

Please see the Flatpak issue (linked above) for further details. Thank you!