If the problem is hash marks being in the black part, I've had that forever. I thought it was normal.
I'll try and see if I find a fix on my end.
If the problem is [ ] keys not doing anything, make sure you press zoom in after pressing Z, and if that doesn't work, press Z again and then try it. In the past I've somehow managed to zoom out while zoom was un-toggled, only to press Z and not get any zoom.