With build 916(?) it was no problem to regenerate a couple of bars with the new 'MultiRiff' tool.
After the update to build 927 the very first bar after(!) the newly generated RealTrack always has a short dropout of about 1 beat. You can already hear that when playing the song in the MultiRiff tool itself.

This did NOT happen with build 916

Minimal walk-through to reproduce the issue:

  1. create a new song. No need to enter any notes
  2. assign style _ACUSHLA.STY
  3. generate RealTracks and play it.
  4. select e.g. bars 5 - 8 and press F8
  5. select Guitar 1 as track and click on 'Generate New'
  6. listen to bars including bar 9 and you'll hear the problem at the beginning of bar 9.