Drawing issue [Solved]

[Nodamex]

How can I handle this problem?
Even if there is no draw event, it happens.

The issue about walls sometimes disappears, but the other one, I cannot fix it.
Arm has several parts, but all of them has the same color.

Why does this outline appear? It looks weird

 

[TheouAegis]

Which version of GM? The arms look like feathering... or texture bleeding if you're absolutely certain that outline is not in the arm's sprite itself.

 

[Nodamex]

It's the latest version of GMK.

This is the arm.

Wall problem is fixed by itself.
But this is permanent.

 

[obscene]

How are the black outlines being made?

 

[Nodamex]

I found the problem. It is caused by Interpolation B Pixels option.