[dolphin] [Bug 477607] New: Folder tree view breaks if multiple nested subfolders are closed and opened

[Akseli Lahtinen]

https://bugs.kde.org/show_bug.cgi?id=477607

            Bug ID: 477607
           Summary: Folder tree view breaks if multiple nested subfolders
                    are closed and opened
    Classification: Applications
           Product: dolphin
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: view-engine: details mode
          Assignee: dolphin-bugs-null at kde.org
          Reporter: akselmo at akselmo.dev
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 163537
  --> https://bugs.kde.org/attachment.cgi?id=163537&action=edit
Nested subfolders showing wrong

SUMMARY

See image. Every folder would have folders from 2 to 10 in them. If all are
opened, then base folder is closed and opened, the last two folders dont expand
properly.


STEPS TO REPRODUCE
1. Create a folder called test
2. Create folder inside test called base
3. In base folder, run following commands: mkdir -p 1/2/3/4/5/6/7/8/9/10, mkdir
-p 2/2/3/4/5/6/7/8/9/10, mkdir -p 3/2/3/4/5/6/7/8/9/10
4. Open detail view in dolphin so that you're inside test folder and see only
base folder.
5. Expand *all* folders
6. Toggle the arrow on base folder off and on

OBSERVED RESULT
See attachment

EXPECTED RESULT
The treeview would build correctly

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 5.81.80
KDE Frameworks Version: 5.245.0
Qt Version: 6.6.0
Kernel Version: 6.5.12-300.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6600
Qt Version: 

ADDITIONAL INFORMATION

Admittedly this is quite niche issue, but it may cause other issues, especially
since sometimes the nested arrow can appear next to a file instead of a folder.

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