It amazes me how few people are actually bothered by this. It would be fine if it was something niche, but you see this pop-up each time you press ESC, and Mojang just leaving this bug in for the newest major modding version just doesn't sit with me so through blood and sweat I've fixed it myself.
How It Looks In 1.21.1
How it Should Look (<1.20.6, >1.21.2)
Credit to syarumi on MoJira for the images
External resources
Project members
Singlain
Member
Technical information
License
MIT
Client side
required
Server side
unsupported
Project ID