[Bug 50381] Winamp and AIMP (4.70 build 2236) window cannot be moved

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50381

--- Comment #16 from Albert Pool  ---
The source code of Muffin and Marco contains many similarities, so in this case
I think it makes sense to fix both. Window managers should not make too many
assumptions about the way a program behaves; that triggers all sorts of obscure
bugs, mostly with programs that don't use a standard toolkit like Gtk or Qt.

Looking at the source code of Muffin, I suspect the problem lies in the
if-statement on lines 3994-3997 of src/core/window.c.