[dolphin] [Bug 474575] New: Image preview in .zip location: sometimes images are positively added (getting whiter and whiter)

[Henning]

https://bugs.kde.org/show_bug.cgi?id=474575

            Bug ID: 474575
           Summary: Image preview in .zip location: sometimes images are
                    positively added (getting whiter and whiter)
    Classification: Applications
           Product: dolphin
           Version: 23.04.3
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: panels: information
          Assignee: dolphin-bugs-null at kde.org
          Reporter: amanita+KDEBUGS at mailbox.org
                CC: kfm-devel at kde.org
  Target Milestone: ---

This is an interesting bug:

When being in a .zip archive in Dolphin, the image preview seems to not work
normally. Often it worked, but then I had a bug where the image preview was not 

- showing the image
- (moving the cursor to the next image), disappearing
- showing the next image

but the image was positively added on top of the other one, so it got brighter
and brighter. Also interesting is that the thumbnail previews were normally.

The images are JPGs.

Also the image previewed stayed the same, and got brighter and brighter.

Specified App:
dolphin-libs-23.04.3-2.fc38.x86_64
dolphin-plugins-23.04.3-2.fc38.x86_64
dolphin-23.04.3-2.fc38.x86_64
nextcloud-client-dolphin-3.9.3-1.fc38.x86_64

--- Software ---
OS: Fedora Linux 38.20230914.0 (Kinoite)
KDE Plasma: 5.27.7
KDE Frameworks: 5.109.0
Qt: 5.15.10
Kernel: 6.4.15-200.fc38.x86_64
Compositor: wayland

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