Testing #196195
On Linux: Double-clicking an aux window's editor entry in the Open Editors view makes the aux window jump to front for the first click, then the main window jumps to front for the second click and finally the aux window jumps to front as a result of the second click.
Maybe the distinction between single- and double-click on editor entries is too subtle in the first place. It might be simpler to let the single-click bring the window to front and focus the editor.