majesticpie

I have attached the launcher_log file

I've just gone and tried it myself and no, it doesn't happen on 1,19.4 but if you cannot launch multiple instances of 1,8,9. I'm not sure how many versions this bug affects. Also which launcher_log.txt do you want me to link? I have a few of them

my last ticket was closed because I mentioned mods so I've recreated it, multiple of my friends have had the same issue today after I asked them to test it because I was able to have 4 instances of minecraft on the same version yesterday

No this isn't because of mods, I can't launch 2 instances of vanilla either and my launcher is unmodified.