Tokens Invisible for Chrome Users

Hi there. When I loaded a map last night, certain monster tokens were missing and I couldn't add them, drag and drop wasn't working.  I loaded the map in Firefox to add them, but on Firefox they were still there. When my players joined in Chrome, they also can't see the original tokens that I could only see in Firefox. But I could copy/paste the tokens in Firefox, and the players could see the new ones.  Not sure why this is happening. Today, drag and drop seems to work in Chrome, but the original tokens are still gone in Chrome, but there in Firefox.

My guess is this is a desynch or cookie issue. I would start with a forced refresh (Ctrl+F5) in both Chrome and Firefox.  If that doesn't work then I would try to clear your cookies in both Chrome and Firefox.  It is possible that Firefox is seeing an inaccurate state. What Firefox last thought happened.  Alternately, it is possible Chrome is having issues, and maybe one of the above steps will clear it.