It may be conflicting with some of your other indicators.
Does the same happen if you put it on a naked chart?
Yes on a naked chart it also happens, I've also attempted to re-download it. Thanks
It seems to be an issue with the size of the text.
If you are using windows 10, can you check what you have on your display settings?
Mine are at 100% and it looks fine.
If I change to 175% and restart MT4, it looks like yours.