Unindent using shift-tab doesn’t seem to work. I upgraded to 2101 from 2099 and am running on windows 7 64-bit because it looked like 2101 had a fix for unindent, but it still didn’t work for me.
Triggering the unindent option from the edit menu works, however.
Also, is there a custom keybinding dialog somewhere, or would I have to add that to a global user-preference file?