Psilocybin and LSD only interact with the serotonin receptors, they don’t cause the body to release more of it like MDMA and a couple of the 2C compounds do.
Serotonin releasing drugs like MDMA can lead to serotonin syndrome while on SSRIs so I’m not sure why that square is in white.
You can follow the link and go to preferences to change the back-end instance. Works pretty consistently for me now that I changed it.
There’s a game called ScreenCheat where everyone is invisible, so you need to look at other’s screens to see where they are.
I tried for hours to get this working and could not. Steam big picture can actually be used as a launcher if you use boilr to import flatpaks. Might be worth it to try steamOS as an HTPC.