This sort of thing is happening with 3 of our projects. These projects haven’t changed in a few years (from 2015 or before). This was using PlayCanvas 0.188.0 95ae772
Is this a known issue? Are there some new webgl options we can try?
Well, engine 0.188.0 is pretty old now: July 5th 2016. It’s not a known issue, no. Can you run the original scene in the launcher from the Editor and see if Firefox exhibits the same problem with the latest engine?
Do you have a link to that app for me to try on my machine?