When I attempt to rebind the 'Toggle Perspective' key (F5) to the 'g' key, it doesn't work despite there being no conflicts in the keybinds menu.

Also does not work with Travelers Backpack keybinds, again despite showing no conflicts

I just tested it and both of these problems are solved for me by replacing Controlling with amecs (#79)

I've found the specific mod that use this key.
lilypuree/Decorative-Blocks#82