Android studio "x" to close tabs hidden?

Question

I had a colleague with a different keyboard layout work on my mac for 5 minutes and he pressed a lot of different (wrong) hotkeys.

Now the "x" in the file tabs are hidden and I can't use them to close files anymore.

How do I unhide the "x" ?

Answer 1

Enable Editor | General | Editor Tabs, Show "close" button on editor tabs:

Or use Help | Find Action (Cmd+Shift+A on Mac, Ctrl+Shift+A on Windows), start typing the option name, then press Enter to toggle:

Or use Search Everywhere (Shift+Shift with Show IDE Settings option enabled under the gear icon, Enter toggles as well, the lower entry opens Preferences at the corresponding page):