ties on cross-staff notes are placed in the wrong staff
Ties on cross-staff notes appear in the wrong staff in MuseScore 3. Here is a passage from one of my pieces as it appears in MuseScore 2:
And here is how it appears in MuseScore 3.0.1 and the latest nightly:
The tie that is supposed to appear on the lower staff note B is printed on the upper staff instead. This note is a cross-staff note from the upper staff voice 2.
You can load the attached .mscz file to test, although it seems that ties on any cross-staff notes cause the same bug.
OS: KDE neon User Edition 5.14, Arch.: x86_64, MuseScore version (64-bit): 188.8.131.5246, revision: f494c48