There's an annoying bug that I've been experiencing for some time, the scroller overlays the code in a code box and hides the code itself.

It is shown best in the following screen shot:
[![enter image description here][1]][1]
As you can see, the scroller of the code box hides the code itself.

I'm not sure about it but I think it happens only and not always - when the code is only one line.


  [1]: https://i.sstatic.net/MwZfe.png

I'm using Chrome on MacOs