Once you see it, you can't unsee it.

Really weird that they haven't fixed this yet, as it has been quite an obvious visual bug since Rebirth.
Then again, it somehow took me like 500 hours to notice it. lol

The mod works for Rebirth, Afterbirth and Afterbirth+, just install the appropriate folder.
(AB/AB+ use the same graphic)

This is one of the many small visual changes included in my balancing overhaul The Binding of Isaac: Mystified.
Give it a try if you haven't already! :>