I'm a professional illustrator, been using AI for years. I opened up my computer this morning and tried to work on a document in Illustrator and noticed the pencil tool having really weird behavior. The lines were coming out quite wobbly, and when I tried to retrace them to smooth them (a common part of my drawing guesture), it doesn't smooth, it adds more anchor points and makes it more wobbly. I tried looking it up and saw that it might be the fidelity setting but I hadn't changed the fidelity since last night. When I did turn smooth up to max, it made a slight improvement, but was still nowere near the behaviour I was used to. I tried hooking up my older Wacom and the problem persisted it's not the tablet. Reinstalled Illustrator and problem persisted. I booted up my old laptop tried the pen tool in Illustrator on that device. It worked exactly the way I expected. Same tablet, same version of Illustrator. Only thing that's different is the computer. I'm on a 2018 Macbook pro running Big Sur 11.1. The old laptop is on Mojave 10.14.4. Could it be the OS? I updated my new laptop weeks ago, I'm not sure why it would suddenly create a problem for Adobe.
I've attached a video that demonstrates what's happening. The first part is the weird, wobbly behavior I expereinced this morning on the Big Sur device. The second part is the behavior on the Mojave device. This is what I expect to happen with the pencil tool
Update: I reverted to the previous version of Illustrator (25.0.1) and got it to work as expected. I'm still not sure what the problem was
So you are using a Wacom?
Can you check if its driver is fully compatible with Big Sur?
And maybe it needs a preferences reset?
I too had the exact same issue with the pencil tool, right after Illustrator automatically updated this morning. When going over a line while drawing it adds a lot of extra points that it never did before. If you go over a line more that once, it keeps adding even more points. I know the problem is with the update, because I too reverted to the program prior to the update and the issue is resolved. Please, Adobe, correct this pencil issue in your latest update.
I also had the same issue with the pencil tool. My pencil tool kept adding extra points when I tried to draw over it to smooth it out. After reading this conversation, I reverted to the previous version of Illustrator (25.0.1) and got it to work as it had before. Thank you for posting your update @annm89579550 ! I hope Adobe fixes this bug in their next update.
Sorry about the trouble this issue has caused. We've fixed this in the latest release. Please update Illustrator to v25.2.3 to get this fixed. Here's a link with more details: https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/42559438-lines-...