Misbehaviour of upper left window button

When I left-doubleclick the upper left corner of a window it normally is supposed to close. With Opus listers it behaves odd: a maximized lister window changes to normal size and just a normal sized window closes itself. At first I thought this could be configured but I couldn't find anything after looking through the options for a loooooong time.

Is this a misbehaviour of Opus or am I simply blind and do not find the switch for this?

PS: THIS odd behaviour (and nothing more) is keeping a friend of mine from buying Opus!

Tell your friend he can relax, this extremely serious bug will definitely be fixed in the release version of 8.1.

Yeah, that's one hell of a bug. Definetely outperforms a bluescreen :wink: