[dolphin] [Bug 427352] New: Folders view flickers continuously

[Andrew Udvare]

https://bugs.kde.org/show_bug.cgi?id=427352

            Bug ID: 427352
           Summary: Folders view flickers continuously
           Product: dolphin
           Version: 20.08.1
          Platform: Gentoo Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: panels: folders
          Assignee: dolphin-bugs-null at kde.org
          Reporter: audvare at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 132127
  --> https://bugs.kde.org/attachment.cgi?id=132127&action=edit
Video demonstrating issue. Watch carefully the folder panel on left side for
flickering arrows.

SUMMARY

The folders panel flickers its arrows very quickly, repeatedly on certain
directories, usually ones that do not have a sub-directory.

STEPS TO REPRODUCE
1. Launch Dolphin.
2. Enable Folders Panel.
3. Click around folders panel and see flickering of arrows.

OBSERVED RESULT

Flickers arrows, causing distraction.

EXPECTED RESULT

Should not flicker arrows so much. I assume this is while trying to check if a
directory exists in the path.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.8.13
(available in About System)
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.1

ADDITIONAL INFORMATION

This was not happening in a prior version.

My main filesystems are ext4 mounted with defaults. mount output shows this to
mean:

rw,relatime

I have seen this happen with the /run path which is tmpfs.

I do have 'File Search' enabled, with file content scanning enabled, but not
hidden files.

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