In 18.104.22.168 Editor, doing a “Formatting Tools->Format Case Only” converts all tabs to spaces. How evil! Because, as everyone knows, tabs rule! And since everyone agrees, I’ll just ignore trolling replies to the contrary…
Interestingly, if I turn on “Editor->Display->Show whitespace”, I see that typing spaces followed by a tab converts all the spaces to a tab. I wasn’t aware that was a feature! Maybe not related, but thought I’d mention it.