[Breeze] [Bug 419651] New: single-click activation logic breaks with selectable QAbstractListView widgets

[Ariadne Conill]

https://bugs.kde.org/show_bug.cgi?id=419651

            Bug ID: 419651
           Summary: single-click activation logic breaks with selectable
                    QAbstractListView widgets
           Product: Breeze
           Version: 5.18.0
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: QStyle
          Assignee: unassigned-bugs at kde.org
          Reporter: ariadne at dereferenced.org
  Target Milestone: ---

In a selectable QAbstractListView widget, the first click should select the
item.  A second click should then activate it.  Until Plasma 5.18, this was the
case.

In Audacious, we have worked around this bug by installing a QProxyStyle which
forcefully disables the single-click activation logic on the playlist widget.

https://github.com/audacious-media-player/audacious-plugins/commit/bd1b29fbfe9d85bc3a99586044ce62d95f3f55fd

This regression does not exist in other QStyles, such as the Adwaita style.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Alpine edge (kernel 5.4.30)
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.68.0
Qt Version: 5.14.1

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