UI Stroke dissapears when playing

So i was testing my game, and suddenly out of nowhere the ui stroke that i had in my x button for one of my ui’s was gone. I tried everything,even making brand new buttons. But it would not fix the problem. Does anyone know why this is occuring?

Screenshots:

stroke

stroke 2

Can we see the strokes settings and where its located?

stroke 3
stroke 4

have u tried restarting studio as this may just be a bug.

yes, multiple times.Didnt work.