While testing my game on Asus Fonepad 7 (GPU PowerVR SGX544MP2) I found out that neither mask graphics nor masked object not drawn. I'm using default UI/Default shader on this images. I recently migrated to the latest Unity version from the 2017.3 where everything worked fine, so it looks like some stencil issue in the latest Unity. Also same mask works fine on Android emulator. My mask is not square so I cannot use Rect2D mask... Any workaround?