The hotkeys don't work in german DO.
Nothing happens allthough they are assigned.
For example: "STRG+F" for "Find" is assigned but when pressed nothing happens. Also just typing a letter to jump to a filename doesn't work.
Hm, after restarting it worked again. But this happened not the first time...
I'll post when this behaviour returns.
Do you always use the same input language, or change between more than one?
A change was made in 9.1.0.1 (I think) to fix a problem reported creating hotkeys involving the number keys with French keymaps. In theory now everything should work but you may see strange results if you define the hotkeys using one keymap and later use them with a different keymap. Maybe there are other side effects but that's the only one I know of.
Solved in 9.1.0.2, not 9.1.0.1 