STEPS TO REPRODUCE
1. Start Discover.
2. Open 'Plasma Addons' page.
3. Without waiting for addons to load - scroll the page by dragging it's scrollbar - multiple drags of scrollbar maybe needed.
Discover window hangs
Normal scrolling of Plasma addons page without hangs
Operating System: KDE neon Developer Edition
KDE Plasma Version: 5.14.80
KDE Frameworks Version: 5.53.0
Qt Version: 5.11.2
Kernel Version: 4.15.0-39-generic
Discover unfreezes after some time - but scrolling again causes it's hang again
here discover is crashing.
Operating System: Arch Linux
KDE Plasma Version: 5.15.1
KDE Frameworks Version: 5.55.0
Qt Version: 5.12.1
I can't reproduce the crash anymore.
However discover freezes and unfreezes all the time while I scroll plasma addons list.
konsole shows the following errro messagre several times while discover
file:///usr/lib/qt/qml/org/kde/kirigami.2/Action.qml:163: Error: Cannot assign to non-existent property "parent"
(In reply to Patrick Silva from comment #2)
> file:///usr/lib/qt/qml/org/kde/kirigami.2/Action.qml:163: Error: Cannot
> assign to non-existent property "parent"
That's already fixed in Frameworks 5.56, FWIW.
*** This bug has been marked as a duplicate of bug 448784 ***