Someone in fedoraforum found that mpc-qt will not run on Fedora 40, so I installed it myself and tried it:
sudo dnf install mpc-qt
then running “mpc-qt” ends with:
mpc-qt: symbol lookup error: mpc-qt: undefined symbol: _Zls6QDebugRK11QDockWidget, version Qt_6
The bugzilla for redhat shows no Fedora component exists named “mpc-qt”, so I checked the output of “rpm -qi mpc-qt” since most packages insert a “Bug URL” into the information. There is none but there is a project URL at GitHub - mpc-qt/mpc-qt: Media Player Classic Qute Theater
So is the “Issues” tab at the project URL the only option to write a report? Note that the package itself comes from rpmfusion-free repo