Can someone confirm as well? I was crashing on my AMD mac running macOS 10.15.3 but since updated to 10.15.4 and no longer crashing (specifically on Sky Temple).
Will try to run Sky Temple. Hopefully the issue is fixed.
Just tested a custom game on Ultra settings (used to run that set up before updating to Catalina).
Alas, it crashes when the gates open.
So NO, the issue is still here
I haven’t played Hots in forever it feels like. Even tried LoL but it didn’t scratch the itch. Oh well, I still have hope it’ll work again with my eGPU one day. 
We’re gathering reports on this, but the latest update should resolve the graphical issues causing the issues with Radeon graphics specifically. For anyone else experiencing this issue, please try the update to 10.15.4 and refer to one of our posts here:
Let’s centralize the reports on these threads, closing this thread.