Line renders just to z=320 and it's completly invisible/transparent at higher z values. It doesn't seem to break at negative values nor in x coordinates. Tested both in versions 0.21.3 and 0.21.4

Turns out this was a broken/derped method in malilib.

It will be fixed in malilib 0.11.8. (There will also be a new MiniHUD build (0.21.4) to fix a couple of other things.)