Blue trails on everything

Hello @Samantha32146477tjff,

We understand how frustrating it can be to encounter technical issues while working in Illustrator. Would you mind performing a clean reinstallation of the GPU drivers (Intel / NVIDIA / AMD) and setting the Graphics Preference to High-Performance for Illustrator (https://www.amd.com/en/support/kb/faq/gpu-110) if you are using a Windows computer and checking if it helps?

If you're on a Mac, kindly try manually resetting Illustrator's preferences and checking if it helps:

• Close all Adobe applications.

• Go to the following locations

• ~/Library/Caches

• ~/Library/Application Support/Adobe

• ~/Library/Preferences

• Rename Adobe Illustrator, com.adobe.illustrator and Adobe Illustrator 27 Settings folders to Adobe Illustrator.old, com.adobe.illustrator.old and Adobe Illustrator 27 Settings.old

• Launch Illustrator from the Creative Cloud.

Note: Location starting with this "~" sign indicates the User Library, which is hidden. So, you need to copy & paste the exact path in spotlight search or from Finder Menu > Go > Go to Folder > Paste the location in the dialog box like this:

Disclaimer: Please note that renaming preferences folders will remove all the custom settings, and Illustrator will launch with default settings. You can also save a backup of the folders in case you want to. The location is mentioned above.