When i delete notes from the staff, it breaks the time signature so i'm not able to fix it in time. (ie despite being in 3/4 time when i delete a note it only gives me space for 2 quarternotes).
S3 - Major
Write a score in 3/4 time. Delete the last note (Ctrl+delete) inside of the bar. Then try to add in a note to replace it (there's no longer a rest/space there to fix it).