I was just at Apple the other day because my Macbook Pro (2018, running Mojave) kept crashing when I would open it from sleeping. They told me something in the Adobe App Suite was causing this to happen. So I uninstalled apps, then reinstalled them and it fixed the crashing upon waking issue.
However, when I tried to use Illustrator, it was very buggy, glitchy, would freeze up. I contacted support and they told me the only solution is to sign out of iCloud to use Illustrator. I don't even have any Adobe related files in my iCloud, but it is my primary account I use to sync calendars and email.
It seems crazy to me that I can't even be signed into iCloud in order for Illustrator to function properly, considering none of my files are even stored in iCloud.