A few days ago Microsoft released a hotfix for SCOM 2019 UR4.
When applying SCOM 2019 UR4, the SCOM console might become slow in some screens. Especially in the group operations view, where a view got added. And now it got removed again.
The hotfix only applies after you installed UR4. It is only for the SCOM Console by the way.
So, if you recently went to UR4 after our previous blogs about that subject, have a look at patching the SCOM consoles to this post-hotfix.