Language switching doesn't work at all in Big Sur
I produce dual language keyboards and keycap stickers for both Windows and MacOS. I just got off the phone with a customer that couldn't get her Mac to switch to a different language. After doing a remote control session with her to check that everything was set up correctly, I did a Google search and discovered that this has been a known issue with Big Sur since release. There is no way to change languages and no work-around. Keyboard shortcuts (both the old way and the new way) don't work, nor does manually changing the language using the mouse in the language bar.
Does Apple have any intention of fixing this, or do I need to suggest that my customers give up on Apple and purchase Windows machines?