[dolphin] [Bug 435536] New: Location bar lags and becomes unrensponsive using fish on a directory with a large number of items

[Massimiliano L]

https://bugs.kde.org/show_bug.cgi?id=435536

            Bug ID: 435536
           Summary: Location bar lags and becomes unrensponsive using fish
                    on a directory with a large number of items
           Product: dolphin
           Version: 20.12.3
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: bars: filter
          Assignee: dolphin-bugs-null at kde.org
          Reporter: m.lincetto at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
When browsing a remote directory with 'fish' and if such directory has a pretty
big number of items, the location bar responsiveness becomes inconsistent and
lags are experienced.

STEPS TO REPRODUCE
1. Connect to a remote filesystem using fish
2. Browse to a directory with a large number of items (~ 2000)
3. Try to scroll the items and then try to use the location bar.

OBSERVED RESULT
Location bar responsiveness seem to depend on the status of the "scrolling",
becomes laggy.

EXPECTED RESULT
Location bar should always be responsive?

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora / 20.12.3 (zawertun's COPR) 
(available in About System)
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2

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