Black areas in live mode

Hello,

I have the following problem

The areas where elements were included or written are black

I took different pictures

in the editor

in the preview

and Live on Windows Viewer

Is the background image .jpg? (it should be .jpg for windows player).

Current Windows player does not support overlapping regions and true transparency.
It can be “fooled” a bit with .jpg layout background image, but that’s about it.