wrong tempo at repeats

I’m using MuseSore 0.9.4 on a Windows XP professional Computer.
I have a problem with the tempo in play mode. The song has 4 parts. Part 1 , 2 and 4 should have tempo 56, part 3 has tempo 168. Part 1 and 2 will be repeated with a volta 1 and 2. the text – tempo- marks are set correctly. If I play the song, then the tempo 168 part starts in part 2 and not in part 3 and ends not at the expected measure. It looks like the measures are not calculated correctly. It seems that the repetitions are not included in the calculation.