Zalgo
Zalgo
Here is my log from the same issue https://mclo.gs/RFEPmiH  and here is a pie chart does not occur with starlight instead of phosphor
I tried to make this test as reproducible as I could, seed was 1378003740600832149 First, I joined the game and waited a full 10 minutes for things to stabilize  
1.20 dramatically improved the performance of the lighting engine. There hasn't been an official yes or no as to whether phosphor will be updating, but I wouldn't bet on it...