This was confirmed by Bitdancer to be by design I believe: https://devforum.roblox.com/t/serious-issue-discord-servers-are-able-to-prevent-you-from-playing-roblox/2971604/31?u=ashi_division

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   Dan Luu (danluu@mastodon.social)'s status on Tuesday, 11-Jun-2024 11:00:37 JST Dan Luu

   State of the art anti-cheat techniques: Roblox detects if you have the string "x86dbg" in a window title (or window?), so kids are changing their display names and discord server names to x86dbg to get people kicked from Roblox.

   If you do a search for this, links to big discussions on Roblox forums return "Sorry that page is private", so I guess that's their solution to the problem?