I am using version K and have previously reported problems with these two features. I have been stress testing these by repeatedly activating different combinations (both on, both off one or the other on) and can report that eventually they stop working as they should. Aside from filling the entire screen with columns, auto width stops completely displaying the entire column as it did on the first couple of activations. Multi level headers similarly does not work as it did when first used (although it was not working correctly for me to begin with). One or two headers which had the room to be displayed were truncated.

 

Jon