I choosed a ranked mod matchmake, first i got sent to a unranked match make then two players started pinging and rejoining for some reason and when we fight on lenshu my opener changed it self when i spaced and i had grabs and i can't ungrab ... wtf ?

https://imgur.com/a/BvtQy

Hello Nope. Most of these bugs are known to currently cause issues and they are being worked on. People pinging and rejoining are bots that are being dealt with (it's just an extensive process to find and ban all of them) and opener bug is acknowledged as well. I'm not sure about ranked queue sending you to unranked match, but for now just wait for fixes.

what about me able to grab in lenshu ?

As I mentioned the bug is acknowledged, some people were able to recreate it as well and it has been brought to out attention not too long ago.