[dolphin] [Bug 465006] New: Dolphin hangs when hovering cursor on a dictionary file (mobi)

[tiklii]

https://bugs.kde.org/show_bug.cgi?id=465006

            Bug ID: 465006
           Summary: Dolphin hangs when hovering cursor on a dictionary
                    file (mobi)
    Classification: Applications
           Product: dolphin
           Version: 22.12.1
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: panels: information
          Assignee: dolphin-bugs-null at kde.org
          Reporter: tiklii at tutanota.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
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See
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***


STEPS TO REPRODUCE
1. Download a dictionary file in mobi format (for kindles).
2. Have 'Information' panel toggled (press F11) on.
3. Hover over the file using mouse or using keyboard.

OBSERVED RESULT
Dolphin hangs for tens of seconds if the file is on ssd. If on hdd it just
keeps hanging and have to kill it.
During this time baloo_filemetadata_temp_extractor uses excessive cpu and
memory. Here's a screenshot: https://i.imgur.com/4M6DyYi.png 

EXPECTED RESULT
Doesn't hang

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I am using Dolphin on sway (arch linux).
Here are some files to test on:
https://archive.org/details/Oxford_Dictionary_kindle/ (this one gives a longer
hang time)
https://github.com/jmdict-kindle/jmdict-kindle/releases/tag/3.0.20220129

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