weird background color separation issue

[tttuuu888]

First of all, I appreciate this great package. Thanks a lot!

I found weird background color separation issue and it can be easily reproduced.

First I cloned this repository and changed demo.html file 2 part.

(18 line)
<link rel="stylesheet" href="css/theme/black.css" id="theme">
to
<link rel="stylesheet" href="css/theme/moon.css" id="theme">

and

(394 line)
transition: 'slide', // none/fade/slide/convex/concave/zoom
to
transition: 'none', // none/fade/slide/convex/concave/zoom

and then the result is as below.

I found this while looking for good combination of the transition and theme options.

[bnjmnt4n]

Hi, I don't seem to see any issue with the background. Feel free to ping back with more details.

[tttuuu888]

I have checked this again on windows edge, ubuntu(16.04) chrome, ubuntu firefox and this is only happening in my ubuntu chrome. It was also gone in chrome as well when I turned off hardware acceleration. Maybe this only has to do with my environment.
Thanks a lot.