L > To add or remove tags.
Q > To filter my assigned cards.
M > To assign or remove members on cards.
These shortcuts, and a few others, work perfectly in both uppercase and lowercase.
This isn't the case with the new board selection box access with a "b" (which at least in the snitch is a lowercase b), nor with card filtering with an "f" (where the snitch is also a capital F, lol).
It's incredibly tedious.
I already reported this bug a few months ago, here.
I'd like to take this opportunity to remind you of this related suggestion here.
Please make an effort, thanks.
