Is anyone going to do something about this? Or at least just tell us what is wrong.

I have tried it now and it does not work. Each time when I open the second Roblox window it says shutting down Roblox and it leaves me with only 1 window open.

I also have problems with Roblox but with the MGI

This problem came after a Roblox update. I have tried to reinstall Roblox but it didn't help. Also, it's not a local problem as I have tried to do this on multiple devices

The Roblox MGI (multiple game instance) is broken. I have used it for almost 2 years and it cracked down today. I am not sure what happened but I can't open 2 Roblox tabs at the same on the same device. Does anyone what is wrong with the MGI?