Pedal with 90 Degree Centered Ending (Line become invisible, volatile application)

New score + a measure of notes. Add a pedal marking that doesn't end with a * but the hook type that starts and ends with hooks like \ _ _ _ |(Not the starting text type as Ped___| kind). In the inspector, change the End Hook to be 90 Degree Centered.

This makes the pedal line invisible for some reason, and what's worse, the program tends to crash afterwards after a few activities. This has to be fixed, since the volatility is super-error prone so far experienced, liable to a sudden shut-down. Yet, 90 Centered hooks seem to work ok with the type that starts with a Pedal text. Strange.