I haven't deduced a specific cause of the malady, but I'm finding that I'm getting locked in a shaded screen after some edits, particularly if end point nodes have changed in Chrome. I noticed a looping error in the console and identified the faulting instruction was in Color Highlights, specifically ln 736.
VM80754:736 Uncaught TypeError: Cannot read property 'attributes' of undefined
This might be associated with something else I've been noticing (possibly unrelated) that pops up associated with wLib:
VM172751:2 module Waze/Presenter/FeatureEditor/Segment not found
Following this error I'll find seveal 500 level responses from
http://www.waze.com. However, I'm not nearly as adept at script writing as I would need to be to do a proper RCA on all this. Just seems something is possibly amiss.