P: Stroke overprint glitch

Great! thanks for your help. 

Thanks. Engineering is investigating this issue. Doesn't seem to be related to the Legacy Compositing changes.

Hi Jeffrey, sorry for the small delay here is the original file, that I have issues with. 
https://adobe.ly/2zUgL8v

it is showing inside and on the stroke itself, but on the previous file it was outside as well. I will include the other file on Monday. thanks for help 

Thanks. Just to confirm, in the example you sent, the blockiness/glitchy part is showing up inside the brown circle?

Ok I've managed to recreate the problem, files attached, I noticed when I toggle the visibility of the stroke affect the glitch is changing, also if I zoom in and out it changes. here is the link  https://adobe.ly/2UmQ9Wj. Thanks for your help.

Hi Jeffrey, thanks for the comment, I will post it on Monday as I don't have access to this file at the moment, 
And Yes I did try the Legacy Compositing option and still had the same issue :/.

Could you post a copy of this file for us to troubleshoot?

If you choose Preferences > Performance... and check "Legacy Compositing" and restart Photoshop, does it work correctly?