Mobile landscape layer limited to 2 per segment?

Hello,

We use UE4.21 and we have met similar issue on iOS preview (ES3.1). Is the limitation still exists?

I mean, could we use 4 or more layers per component for ES3.1 device?
(In order words, is the request UE-41902 being implemented?)

In the level which we are working on, it seems that sometimes 4 layers work and sometimes not…