Vittoria Corsa Graphine 2.0 (tubeless ready) issue

[AJM100]

Hi all. Pulled this tire as the rubber sidewall separated from the casing in a small circular area, the rubber seems very thin in this area too. The inside of the tire in the affected area looks fine (photo included). I was running it with a tube. It held air and otherwise no issue riding. Has anyone experienced anything like this with these tires? Any opinion if safe to ride (I pulled it from the front, if I ride it it would be a rear only)?

Thanks for any help or opinions.