Called unimplemented OpenGL ES API - Acer Iconia Tab 8 :

Howdy Zimo,

Thank you for reporting this issue. I have just attempted a quick reproduction and have been unsuccessful in seeing any errors. Would you be able to clarify if this is a source build or a binary build of UE4? Would you be able to recreate this issue with a new template project?

Any additional information on how I may be able to reproduce this issue internally would be greatly appreciated.

Thanks and have a great day!