I am using Adobe Premiere Pro CC version 23.2.0 on a Mac Studio with an Apple M1 Max chip with MacOS Ventura 13.2.1 and wireless Apple Magic Mouse.
When I open a project, if the audio tracks are set the default size, I am not able to click between the tracks and drag the window to the size I would like. I am able to use the shift/scroll option to change all of the tracks at the same time as well as the Option/Scroll to change the track height individually. Upon further exploration to make sure that I'm telling you the most information possible, the drag tracks won't work if it is between the 'toggle sync lock' and 'mute' icons on the audio track. It does seem to work outside of those areas. The video tracks work as expected on all counts.
I've included a video using the mouse and attempting to adjust the tracks larger when the symbol appears and then I expect to left click and move the mouse for it to expand.