Instrument/Voice names alignment issue
The Instrument & Voice names, and abbreviations, on the left side of each page tend to become un-aligned with each other when the Hide Empty Staves feature is enabled/disabled.
On saving and re-opening the score, the alignment issue will be corrected.
Editing the score (such as adding or deleting a note or chord name) will correct the problem.
However, if you don't notice the mis-alignment, it is easy to print the score with the alignment issues present, which can waste paper and time.