Up/Down Qwerty arrows act erratically

I use those to move to different tracks in the project window - for example pushing the up arrow to go from Track 9 to Track 8. I’ll find that sometimes (maybe a quarter to a half of the time) nothing will happen when I do. In those cases, more often than not, if I choose the down arrow first, then the up arrow, the selected track will move up … but sometimes it will jump up to Track 5 or 6, or even all the way up to Track 1.

Does anyone know what I can do to make it behave better?

Thanks -

Anyone else with a similar problem?

Thanks -