They do work in vertical tabs, but only one level. You can’t have nested tabs as far as I can tell.

Wow, this is really cool!!!

NGL I think whatever you’re trying to do is either a limitation of the Roblox install or something else that isn’t specifically an OS X issue. The file permission stuff sounds weird and I’d reevaluate what you’re trying to do and if the approach is correct, especially if you’re going to have to turn off operating system security features to get it to work.

Won’t anyone think of the Nazi’s feelings!?

Basically what other people in the comments are saying, but here is a video Matt Parker explaining it: https://youtu.be/j04IAbWCszg?t=461

If your school or employer has an MDM solution on their laptop that they issue to you, you have 0% of privacy. You could use DNS over HTTPS which will prevent your DNS queries from being picked up, but the MDM could issue their own CA and even intercept https traffic. They can also record your keystrokes and screen. It would be wise to think of the machine as compromised, just not by a threat actor.

For maximum privacy, only use the devices for the minimal work necessary. Don’t log into anything for personal use, and use a separate device you’ve purchased yourself.