When I run the following command in my Chrome console the viewer gets black rectangles covering it (sometimes in a L-like shape). Apparently running it on any page with a viewer causes the error. This is causing errors with part of our product.
NOP_VIEWER.impl.setPostProcessParameter("style", "edging");
Viewer version: 6.5 - I was also able to replicate in 6.6. Chrome Version: Version 75.0.3770.80 (Official Build) (64-bit)
Seems to work in older versions of Chrome
We've fixed this and pushed a patch to production. Please try again in version 6.6.4.