Breeze style problem since Qt 6.8.2

[Tobias Leupold]

E-Mail von Jean-Baptiste Mardelle vom Dienstag, 11. März 2025, 11:16:
> On Saturday, March 8, 2025 7:06:18 PM Central European Standard Time Tobias 
> Leupold wrote:
> > Hi all!
> > 
> > There's a style problem with Breeze that emerged with Qt 6.8.2: QSpinBoxes
> > take too much vertical space if an application-wide style sheet is set. 
Even
> > setting a single space as the style sheet already triggers this, it has
> > nothing to do with a spinbox-specific style.
> 
> Hi!
> 
> For what it's worth, I am also seeing this problem in Kdenlive. Didn't have 
> time to investigate, but I can confirm that setting any non empty style 
sheet 
> on a widget that contains a QSpinBox makes it use 1.5 - 2 times the vertical 
> space with Qt 6.8.2 anf KF 6.11 using Breeze style.

After all, it's nice to see I'm at least not the only one affected by this. It 
would be really, really nice if we could get this fixed -- one or another way.

This is really annoying -- and it doesn't seem like the Qt guys would be 
conscious of having done anything wrong and/or to be working too hard on 
tracking this down :-(

> Regards,
> Jean-Baptiste
> 
> > This does not show up with Fusion. And also not in Breeze, as long as no
> > application-wide style sheet is set. I suppose most KDE apps don't use
> > application-wide styles, so not many devs may have already noticed this.
> > However e.g. KPhotoAlbum is affected.
> > 
> > I first thought this was a Breeze bug. Along with some hints from the Qt
> > forum, I opened a respective bug report:
> > 
> >     https://bugs.kde.org/show_bug.cgi?id=499906
> > 
> > However David Redondo said this should be an upstream Qt bug. So I filed 
one
> > there:
> > 
> >     https://bugreports.qt.io/browse/QTBUG-133845
> > 
> > ... where Christian Ehrlicher said he thinks it's a Breeze issue.
> > 
> > So ... now the cat is biting its own tail. I have never worked on style
> > stuff before, so I don't know anything about this. Is anybody with more
> > insight of this willing to have a look at that issue? So that we can 
either
> > get this fixed in Breeze or in Qt or maybe in both?
> > 
> > Thanks in advance for all help on tracking this annoying issue down!
> > 
> > Cheers, Tobias
> 
> 
> 
>