We have the fix available in the latest release. Please update Illustrator using Adobe Creative Cloud application to the latest build for version Illustrator CC 22.1.
Please refer to our knowledge base FAQ – https://illustrator.uservoice.com/knowledgebase/articles/1844590 if you face difficulty in update.
Or get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html
Ashutosh Chaturvedi | Sr. Quality Engineering Manager – Illustrator
Adobe. Make It an Experience.Anonymous commented
Hi I am using Illustrator CC 22.1. Now, whenever I have a stroke around an object and try to reduce the stroke size to 1 point or below, the opacity of the color lightens, but it still shows 100% opacity on all the settings. For example, I have a 2-point black line around a text box. When I change the point size to .5, .75 or even 1 point the thickness of the line does not change, instead the color goes to grey. What's up with that?