Yeah pan and pinch zoom are a mess. Having such similar gestures for actions you access frequently is non-sensical.
Ideas behaves like a photo in terms of zoom and pan.
Draw has this lag and sometimes requires two goes to get the pinch to work.
What. A. Mess.
I'd like for the undo and redo buttons to be added back to the tool bar as well. I think the gestures for undo/redo and pan are conflicting (both two fingers and swipe) and it takes a moment for the app to register what gesture you are trying to make. A lot of the time it's delayed or doesn't respond at all. It's just so much easier to tap on the undo/redo buttons than to hold two fingers to the screen and wait for a gesture to register.
For what it's worth to other users, the gestures seem to respond better when using a pressure sensitive stylus. I'm not sure if that has anything to do with the way the app is designed or if it's because using a pressure sensitive stylus slows down the process enough where you don't notice it as much.
I just can't believe UX designers didn't uncover this usability issue. That's all they do all day.
YES! That was the first function I looked for after migrating my drawings from Adobe Ideas into Draw, and while testing Draw, I drew some sample lines, and looked for UNDO and can't find it I've got a ruined drawing now
There is an undo function, you can sweep left and right with 2 fingers to undo/redo, but it interferes with the pinch and zoom. Unfortunately it's a bit late to tell you this as when you shut the app the undo/redo cache is lost. I hope that helps in the future though.