So, you know that cool trick where with the Smart Tool you can select in the lower third, then move to the top and the cursor changes and it automagically creates nodes and you drag a section up or down? It's awesome. BUT, I'm editing some envelopes and every third or fourth time it just doesn't work. Anyone ever see this?
 

The only time that process doesn't seem to work for me is when I simply don't have enough room to place the cursor "above" the envelope.   Otherwise it's pretty consistent AFAICT.   This is typically while using automation lanes, BTW.
 

The main bug I see frequently is at times, to add or adjust a dot on an envelope, I have to click in areas below where one would normally click. And it's on a per-Track/Lane basis, not global. I need to screencast one and send it in. Surprise I've not seen anyone else posting about that.