Tile Maps are dissapearing in android

Hi,

Tilemaps are dissapearing in game at android environment.

https://forums.unrealengine.com/filedata/fetch?filedataid=136553&type=thumb

But they are visible at windows and editor.

https://forums.unrealengine.com/filedata/fetch?filedataid=136554&type=thumb

https://forums.unrealengine.com/filedata/fetch?filedataid=136555&type=thumb

Here is my level design blueprint is in attachment.
Is it a bug? Can you please help?