Help with selecting notes

Often when selecting a notehead (or a number on the guitar tab staff) instead of being able to drag it to a new pitch (or a new string in the case of tablature) or change the rhythmic value of the note I can only bump the note's placement up or down a bit on the staff. It often takes several clicks before it will let me select the notehead in a way that I can modify it. I never used to have this problem so maybe something has changed about the selection process in the latest version of Musescore that I don't understand. I'm totally willing to believe this is my fault but it's costing me a lot of time when preparing music. Any help is appreciated, thanks!

UPDATE: I eventually discovered that this problem was due to my mouse sometimes double-clicking when in fact I single-clicked. Apparently it's a known issue with some of the Microsoft Bluetooth mice. Thanks for the help and suggestions. I did purchase a new mouse but this issue and the advice I received encouraged me to learn to use Musescore more efficiently, so there's that.