Vertical offset

I am new to MUSESCORE and have managed, without realising, to invoke the "vertical offset" feature
while moving notes up and down the staff, to the extent that it appears that the score does not match the playback (which,of course, sounds as it was intended).
My question is:
Is there an easy way to display/highlight any notes where the vertical offset is non-zero?

Or to set the vertical offset to zero for all notes? (I don't think this would cause a problem as
my scores are rudimentary melody and chord accompaniment)