There is no "lrelease" binary on Fedora, which is needed to build the UI properly. There is a "lrelease-qt5" binary, which is part of the package "qt5-linguist".
To fix the UI not building properly on Fedora, symlink /usr/lib64/qt5/bin/lrelease-qt5 to /usr/local/bin/lrelease:
There is no "lrelease" binary on Fedora, which is needed to build the UI properly. There is a "lrelease-qt5" binary, which is part of the package "qt5-linguist". To fix the UI not building properly on Fedora, symlink /usr/lib64/qt5/bin/lrelease-qt5 to /usr/local/bin/lrelease:
Then it should build properly.