[dolphin] [Bug 426196] New: Dolphin can incorrectly move files/folders while holding down the Control key

[umbreon]

https://bugs.kde.org/show_bug.cgi?id=426196

            Bug ID: 426196
           Summary: Dolphin can incorrectly move files/folders while
                    holding down the Control key
           Product: dolphin
           Version: 20.08.0
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: umbreon.does.junk at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Dolphin can incorrectly move files/folders while holding down the Control key

STEPS TO REPRODUCE
1. mkdir -p ~/test/test2
2. touch ~/test/test2/file.txt
3. Open ~/test/test2/ in Dolphin
4. Open ~/test/ in a new Dolphin window (using another window is important; the
issue seems to not occur if using tabs within the same Dolphin window)
5. WITHOUT holding down the Control key and WITHOUT releasing the left mouse
button, drag ~/test/test2/file.txt to ~/test
6. After the mouse is finished moving, hold down the Control key WITHOUT moving
the mouse any further, and then release the left mouse button

OBSERVED RESULT
After releasing the left mouse button, file.txt is moved from ~/test/test2 into
~/test rather than being copied.

EXPECTED RESULT
After releasing the left mouse button, file.txt should be copied from
~/test/test2 into ~/test.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE neon Unstable Edition
KDE Plasma Version: 5.19.80
KDE Frameworks Version: 5.74.0
Qt Version: 5.14.2

ADDITIONAL INFORMATION
I noticed that if I use a single Dolphin window (with ~/test/test2 and ~/test
as separate tabs) to perform the file copy operation, the issue seems to not
occur.

Issue does not occur when running Kubuntu 20.04.1 LTS from a live image.
(Dolphin version 19.12.3)
Issue occurs when running neon-user-20200827-0945.iso from a live image.
(Dolphin version 20.08.0)
Issue occurs when running neon-testing-20200901-1829.iso from a live image.
(Dolphin version 20.08.0)
Issue occurs when running neon-unstable-20200830-0330.iso from a live image.
(Dolphin version 20.11.70)
Issue still occurs after installing KDE neon Unstable Edition and updating all
packages. (Dolphin version 20.11.70)

The system I first encountered this issue on is running Manjaro, but this does
not seem to be a Manjaro-specific issue.

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