Mouse pointer deletes midi notes in editor

My pointer sometimes when trying to move a midi note in the lower zone editor deletes the note after I click on it. It ends up me being lucky if I get to move the note. I have the snap off and the soft quantize off and need to make minute adjustments without resizing the note. Any help?( Again, I click on the note-and it SOMETIMES deletes-if I click and hover sometimes it deletes and sometimes allows me to move the note)

It’s a double click that deletes a note. If you click to select a note and click again it is removed. There’s probably a preference for this so might be worth looking there if it causes you problems.