DrSigma

On version 1.16.5-1.0.878-BETA, the same problem. Only the server host can choose research, also this window is shown every time like the screenshot below for non-host players. 

I have a similar problem with the mausoleum in the cold biome. I wrote about it in #4579

Great, it worked, thank you. And is it possible to make this blacklist used for any world, that is, not to climb into the configuration file of each created world...