Autoplacement in MuseScore 3
Autoplacement has issues when writing scores for guitar: autoplacement of fingerings is problematical especially when adding fingering for both hands (1234 and piam). Turning off autoplacement for each of those entries is the only option I know of... (so far?).
Also when opening scores written in Musescore 2 the suggestion to 'reset the position of all elements' should not be followed: the new positions are totally unsuitable!