All:
A prior version 'bug' is that the next frame/previous frame buttons on the timeline require tedious clicking for every frame, while older versions of vegas pro would continue with click and hold. Fortunately for Vegas Pro 15, the Transport bar versions of these keys worked 'correctly' ie click and hold would continue to move the cursor.
But in Vegas Pro 16 the Frame advance/reverse buttons are missing - is there a way to get these back or some other mouse button to do frame advance/reverse with a single mouse click?
Note that alt-left and alt-right do not play every frame - skips frames.