Ok so basically i have this issue on every version in minecraft.

I've never seen that issue before and couldn't find it anywhere.

I was playing minecraft normally, then suddenly i realized i have these black lines on my hands.

And i know that issue, it happens when your skin supposed to be in Slim but it's on Classic.

And the thing is the skin isn't on classic.

I found out that every skin i use(every slim skin) it shows these black lines.

And by the way. Another issue. Everytime i want to change my skin i gotta restart the PC.(also suddenly happened),

And i tried to reinstall the game, didn't work.

Does anyone know how to fix this issue?