I found, that there are some problems with tied notes, when condensing:
Ex. 1: here is probably the whole tief note counted as “1”,so Dorico is happily condensing. (Default settings).
Ex. 2: I often get extra rests, when condensing tied notes.
As condensing is a wotk in progress, I’m not sure, if these are known issues. If you want, I could send the score to you for testing. I can’t post it here.