Update on this issue:
It is fixed totally in 5.3.
FOR 5.2-----------
Problem was only in preview for OpenglES. on 5.2 or previous. If you are using 5.2 then switch to Vulkan preview, it will be fine.
** It was only an issue with preview. On original device after packaging it will work just fine. Switching to Vulkan can give you an idea preview of your original device.