Not sure if these ones have been mentioned yet

F5 before opening chest, then F8 to see an alternative selection - character focus has changed. This is not consistent (of course not - that would be too easy) but I think I have noticed it most with Treasure map chests.

Can't add custom markers on map - though that might be user ignorance - I'm sure I use to be able to.

After digging my character doesn't put her shield back on again.