Quote:My workaround is to select the color picker tool and pick my color from the image. It applies the new color to the background color, so I need to swap colors to use my selected color with the pencil. Or swap colors to put the to-be-changed color in the background-position before using the color picker!
If the required colour is already in an image no need for FG/BG colour picker. The picker tool is all you need.
but
In the color picker tool options are Set ForeGround / Set BackGround options and whichever one is active CTRL toggles to the other. No need for swapping (as far as I can see).
...and CTRL with paint/pencil changes to a FG colour picker. All those work here;
Edit: Always dangerous to assume anything, I assumed a new Mint21 installation
I do have a Mint20 Una with flatpak Gimp 2.10.30 (VM) just a matter of digging it out and running.
The fix uninstall xdg-desktop-portal and xdg-desktop-portal-gtk does work.