[dolphin] [Bug 476884] New: [Regression] Dolphin Does Not Show Thumbnails of Some JXL Photos [regardless of size or resolution]. Gwenview is O.K.

[John]

https://bugs.kde.org/show_bug.cgi?id=476884

            Bug ID: 476884
           Summary: [Regression] Dolphin Does Not Show Thumbnails of Some
                    JXL Photos [regardless of size or resolution].
                    Gwenview is O.K.
    Classification: Applications
           Product: dolphin
           Version: 23.08.3
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: view-engine: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: kdelovaa at mozej.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 163080
  --> https://bugs.kde.org/attachment.cgi?id=163080&action=edit
Example of JXL Dolphin Does NOT display Thumbnail [Gwenview is O.K.]

SUMMARY
***
[Regression] Dolphin Does Not Show Thumbnails of Some JXL Photos [regardless of
size or resolution]
***


STEPS TO REPRODUCE
1. Compress a few jpgphotos with cjxl (by default cjxl compresses to loseless
if the source is jpg)
2. Open Dolphin
3. Some thumbnails of jxl are missing (regardless of size or resolution, hence
one cannot pinpoint the reason)

FYI: Gwenview [23.0.8.3] dislpalys thumbnails (ctrl+b) and loads the photos. No
problem. All O.K. Only Dolphin is broken.

EXPECTED RESULT
Revert the changes and reinstate of Dolphin being capable of displaying
thumbnails of of all jxl photos.

SOFTWARE/OS VERSIONS
ffmpegthumbs 23.08.3
kimageformats5 5.111
Operating System: Arch [not Manjaro]
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11

ADDITIONAL INFORMATION
Please stop meddling with KDE capability of displaying photos. It happenes way
too often, so its starts to be a game: "Are KDE's todays updates going to
breake some photo displaying"= YES/NO. 10 points if you guess. Seriously, if it
works why breake it? Plese tell me what is going on? Why displaying photos in
KDE is more broken than not? Which developer does it?

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