Xcode 12 - Project Navigator width is stuck/locked, can't resize

Question

Every so often the project navigator/left panel is stuck at a fixed width. This is very annoying when I have extensions in separate files named MainViewController+<Extension name>, because the <Extension name> is truncated.

^{PhotoSlide... what???}

Pressing the "Hide or show the Navigator" button doesn't do anything either.

Quitting Xcode and restarting works. But this takes time, and I lose my place. Is there any other way to fix the stuck width problem?

Answer 1

Please follow these steps if you don't want to reopen the Xcode everytime:

1. Right-click (or control-click) on any file
2. Select Open in New Window
3. And ta-da! You can now resize the project navigator freely!

Answer 2

Instead of opening a new window, just use a tab:

1. Open a new tab (⌘+T)
2. Close the old one