SUMMARY


STEPS TO REPRODUCE
1. have music with an é in the filename
2. add to playlist

OBSERVED RESULT
crash

EXPECTED RESULT
does not crash

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 18.04
(available in About System)
KDE Plasma Version: 5.12.9
KDE Frameworks Version: 5.44.0
Qt Version: 5.9.5
Because it's Flatpak, I don't think this matters here that much.
So here are the stats I get from About Elisa under "Libraries":
- KDE Frameworks 5.78.0
- Qt 5.12.2 (built against 5.12.2)
- The xcb windowing system

ADDITIONAL INFORMATION
tried running the flatpak in terminal
trying to add the song to the playlist created the following message:
/usr/include/c++/10.2.0/bits/stl_queue.h:218: std::queue<_Tp, _Sequence>::reference std::queue<_Tp, _Sequence>::front() [with _Tp = std::tuple<QUrl, bool>; _Sequence = std::deque<std::tuple<QUrl, bool>, std::allocator<std::tuple<QUrl, bool> > >; std::queue<_Tp, _Sequence>::reference = std::tuple<QUrl, bool>&]: Assertion '__builtin_expect(!this->empty(), true)' failed.