[Bug 58061] [FL Studio] When holding CTRL to zoom in the playlist, it also scrolls vertically - possible regression

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58061

--- Comment #6 from Miliardo  ---
(In reply to Sagawa from comment #4)
> This issue may have been fixed by my commit,
> 42b0d6c682916ae3daceffff91ceae32115722ac.
> Could you retest with the latest git or the upcoming 10.6 release?

hey I've managed to test the latest wine git and it works now, the issue
disappeared!

I'm wondering about what caused the issue in the first place, can you tell me?