Fire-y bright blob in web map?

[BrittanyBurson]

I've got a single user who gets this strange fire-y, bright blob that flickers when panning the map (not sure how else to describe?). It happens in both Chrome and Edge. Has anyone encountered this before? Any ideas? 

Link to the map: City of San Diego Council Districts

[EmilyGeo]

I can't reproduce in either Chrome or Edge. Are they using the latest version of both?

[BrittanyBurson]

Hi @EmilyGeo I can't recreate it either. We have the same version of Chrome:

[BobBooth1]

Might be a graphics card issue with their machine? Try updating the driver.