If I may add a piece to this puzzle, I noticed that once when this happened my tablet behaved oddly with the draw tool, it was mid draw and the error popped up, yet the draw still followed my stylus even though it wasn't in contact with the tablet. Only when it was out of range did the line disappear. So the glitch may have something to do with the tablet. To provide further info, I'm running Mac, Latest OS, (Pretty sure) Latest Animate (Sure) No other apps were running during Animate's run time, Using Wacom Intuos tablet (model CTL -480) But I don't know if the Wacom drivers are up to date.
May I ask your specs? (Operating system, if your using a tablet, other apps running?)
Also totally agree adobe, please address this issue. I will contact you directly if no one else has input...
Apologize for the inconvenience. If you have a purchased version of Adobe Animate, send me your Adobe ID (email ID associated with your Adobe account, location, and phone number. We will get in touch with you for investigation. To send a private message, click my picture and use the Message button.
Well, I do have the purchased version, (I recently upgraded from an older version, I love the new version) But the error hasn't come up since I tried the method explained here. Which makes me think I just need to update my tablet drivers... But I'll still send you my email so you can get my info, cause the software has had some unexplained crashes as well. Plus it could help others as I'm clearly not the only one with this issue.
I believe that this is the source of the problem. I've been experiencing this bug a couple of times today and it is pretty annoying.