Hello,
In addition, upstream at some point changed the main tested GUI from QT (Qt4) to QT5 (Qt5). I tried triaging the many source code related build failures for Qt4, but it's pretty clear Qt4 is no longer their main focus. Thus, I switched to Qt5 in the SPEC file.
The change already landed in Fedora 34/Rawhide.
Cheers,
Andy