I fell through the ground in Cinfras

When I was doing the quest "Murder Mystery", the quest told me to go to -487, -4975 where the quest person was and when I was there in Cinfras, a large chunk of Cinfras was just non existant and I just fell through after being glitched in the ground for a while.
I'm pretty sure that this is a bug but I was using Wynntils Ultimate not sure if this is what caused it or it was a server bug :/

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ok nevermind it just randomly went back to normal

 

Yeah that’s just a bug with the chunks not loading due to server side lag
As u noticed if u wait a bit or /class or relog it’ll go back to normal