Crosshair deformed

When i play Minecraft with a GUI scale of 3, my crosshair is a little deformed. The upper part of the vertical line is 1 screenpixel moved to the left. (see at screenshot)
I tried other scales but they are okay. It happens only at scale 3 either fullscreen or maximized window. Even at some diffrent window resolutions.

I first noticed that in 17w45a or so (not shure)

I found no other report, that describes my bug.