What's with the random Disconnects when Dismounting?

I’ve noticed repeatedly frequently, especially since the latest patch, that most actions where you dismount, will often cause the game to disconnect. Especially when you quickly fly in and use an ability like Whirlwind, it’ll almost almost cause a disconnect.

Or when using Dragonriding near objects, like lamppost, if you hit the lamppost the game will disconnect.

Is this some sort of weird auto system that registers it as some kind of illigal movement or action, since it seems to be the same things that causes it over and over.

https://eu.battle.net/support/en/help/article/000358479

It was Blizzard Services maintenance 2 hours ago, could be that. And now there’s a random normal maintenance it seems. It wasnt added on the support article even.