[dolphin] [Bug 497434] New: Applying changed view properties as default doesn't work, applying them for all subdirectories takes way too much time and Dolphin reports monstrous number of subdirectories

[Łukasz Konieczny]

https://bugs.kde.org/show_bug.cgi?id=497434

            Bug ID: 497434
           Summary: Applying changed view properties as default doesn't
                    work, applying them for all subdirectories takes way
                    too much time and Dolphin reports monstrous number of
                    subdirectories
    Classification: Applications
           Product: dolphin
           Version: 24.12.0
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: ftefrjbhfvasf32 at o2.pl
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 176587
  --> https://bugs.kde.org/attachment.cgi?id=176587&action=edit
Monstrous amount of reported subdirectories in Dolphin during the operation of
changing view properties

SUMMARY
After update to KDE Gear 24.12, I have noticed new default view properties to
show thumbnails even in system directories, like / and /usr/lib/
I wanted to change that. I commanded Dolphin to apply new default view
properties to not show thumbnails. I didn't work. All directories, be it system
or directories in /home/, still showed thumbnails. Then I tried to change view
properties in / and all its subdirectories. It took monstrous for this
operation amount of time, notably half an hour, and Dolphin showed, that / has
about 2 000 000 subdirectories, which is impossible, because I know, that even
number of files in / is equal to about 600 000, so this filesystem can't have 2
000 000 items. Then, when this operation finished, I checked my home directory.
It still had thumbnails enabled (and showing directories first, which I
dislike). So I repeated the operation for my home directory. This time Dolphin
showed about 8 000 000 subdirectories, which is way more impossible. This
operation already lasts 45 minutes, while I'm writing this bug report.

STEPS TO REPRODUCE
1. Try to change default view properties or change view properties for the
directory subtree.
2. Observe the result.

OBSERVED RESULT
No result of changing default properties. Long time of changing properties for
subtrees.

EXPECTED RESULT
Everything works for short time, number of subdirectories is accurate, when I
want to change default view properties, this properties are applied to all
directories without explicitly changed properties.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.2.4
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.1
Kernel Version: 6.12.4-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 31.2 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Xe Graphics
Manufacturer: System76
Product Name: Darter Pro
System Version: darp7

ADDITIONAL INFORMATION

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