On OS X version 10.14.4 white squares show up and liquids aren't shown. This doesn't happen on 10.14.3.
Branch: Live Branch
Version: OSX
Dupe
I have the same problem since the IOS system updated to 10.14.4 on my Mac. There is no water (polluted or not) where the liquids are supposed to be. Over a night along with the said IOS update, my entire liquid resources are gone.