Vexes are trying to attack players in creative or spectator mode

First, spawn many vexes

Second, switch into survival mode and attack them

Third, switch into creative or spectator mode

Finally, you will see some vexes are catching up with you and trying to attack you, even underground.

 

Video and screenshots:

https://pan.baidu.com/s/1Tn6X8sPld9TfjZTS2AE24Q?pwd=1234

(sorry for my poor English)