Lyrics: select all and "X" causes program to freeze
OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit): 126.96.36.19922, revision: 598057d
Open the attached file. Take the reset or not, the issue is still the same. Right-click on a lyric, chose "Select > All similar elements." Then press Ctrl + R to reset.
Result: The program freezes.