Developing a HMDplugin with 4.19 blck screen

I’m developing an HMD plugin with 4.19。As long as I use VR preview mode, the screen will go black。

Not just VR Windows。

The same code worked well in 4.18。my English is bad。haha,Please forgive me。

I don’t know why the same code for 4.19 and 4.18 is so different, what can affect all Windows getting black