Another bug, sorry if it's been covered

When using timestretch or “close gaps” it seems to totally mess up the audio. Only the realtime mode seems to sound okay…what in the world is going on? this worked fine in version 5.52. I tried the various modes and they all seem goofed up. if i even mildly timestrech a wav in 6.0 it almost sounds like it drops it an octave. I can’t possibly be the only person experiencing this.