When using the Editor (Windows 10), and I have a lot of text files open in their own tabs, I often want to de-clutter and close all the tabs except for the one text file I'm working on.
What I've always done pre-beta is a right-click on the tab header to give me a mini-menu with 'Close tab' and 'Close other tabs'.
In the beta this right-click occasionally opens that mini-menu for me to pick 'Close other tabs', but just as often it doesn't give me the menu at all, it just auto-closes the one tab I wanted to keep open.
I can't figure out whether I'm right-clicking in the "wrong" part of the tab header or it's something else. I don't
think my "right-click technique" has changed.