I ended up fooling with 2025 this week and I want to note that while I didn't have any problems with the Pencil's accuracy suddenly dropping off a cliff, I *did* have a lot of problems with using it to edit paths. It's constantly generating a new path next to the one I'm trying to edit, or failing to detect me going back in to close paths (I work with the "close paths when ends are within X pixels" switch off so I generate a lot of open paths) and making a horrible mess.

I have been seeing reports of this bug and it is making me super happy I always wait for a .1 release before upgrading. The Pencil's my main tool. I wanna see a postmortem on this one once it's fixed, how the heck do you accidentally change something like this and not have the internal testers notice?

(Also I would suggest checking to make sure this isn't affecting the Brush, I haven't seen anyone reporting this but I assume that's using the same path smoothing code as the Pencil and Image Trace...)

Yes, these I already shared. Thanks again.
I will share your email also, so hey can reach you if they decide to.

@Egor Chistyakov

Can you and the team please go to one of my posts on the topic of the pencil tool that I've pasted the URLs to here below.
There I have posted detailed examples with screenshots and comparisons and extensive text about it all.
All you need is there on the pencil tools loss of accuracy.
Please feel free to contact me for more assistance

Here:
https://community.adobe.com/t5/illustrator-discussions/ai2025-the-pencil-tool-has-become-unusable-again-there-s-no-accuracy-it-s-too-smooth/td-p/14922613

...or here:
https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/48973289-ai2025-the-pencil-tool-has-become-unusable-again

@北原健太, @ncic, it is critical, as I see it.
Can you both provide comparisons, so that the team can see it clearly?

Happy to see you posting about this as well! I'll definitely upvote it to help bring more attention to the issue and mark it as "critical"

I've also made two detailed posts about this topic in these places too.

https://community.adobe.com/t5/illustrator-discussions/ai2025-the-pencil-tool-has-become-unusable-again-there-s-no-accuracy-it-s-too-smooth/td-p/14922613

https://illustrator.uservoice.com/forums/601447-illustrator-desktop-bugs/suggestions/48973289-ai2025-the-pencil-tool-has-become-unusable-again

Hope you will consider upvoting my posts too in hopes of getting some attention and getting this bug ironed out

The accuracy of the path conversion for the pencil tool and image tracing has decreased in version 2025. Even if I change the settings to fine, it is converted to a coarse path, and I cannot express the details like in previous versions. Please improve it as soon as possible.

Got it, confirm it, forwarded this to the team.
Thank you for the report.

A continuación adjunto el archivo de ilustrator. En ese archivo realice la operación de calco de imagen luego de la actualización y se ve la diferencia de la misma operación realizada antes de al actualización.
Puede que la perdida de calidad no venga por el calco de imagen si no por el rastrerizado, pero de una u otra manera, el software perdió calidad de resolución ya que estoy trabajando con los mismos parámetros

a continuación comparto una parte de la secuencia que yo realizo en 3 pasos, donde se ve en el paso 03 como era antes de la actualización y como es despues.

Joaquin, can you please share an image that you are seeing the strong difference with? Along with actual vector files generated?

perdida de calidad en la herramienta CALCO DE IMAGEN, la uso diariamente y con la ultima actualización bajo mucho la calidad, necesito urgente que se vuelva a ser como era antes