WowAce

I've tried this with addons on and off, so I don't believe it's an addon conflict causing this..

When I go to set a background texture the texture change at all. If select a texture then go to Layouts > Test, the test frames will have the background texture that I selected. BUT if I then go back and select a different texture, then hit test again the newly selected texture is not applied to even the test frames!

I've tried reloading my UI but reloading my UI only temporarily fixes the test bar issue (however if you repeat what I said above the test frames bug again) and the texture still doesn't get applied to Grid itself.

Background texture is only applied first time the test frames are created, i coded this stuff in this way . Testframes were created only to check and adjust the  area ocuppied by the layouts, i really dont care about the cells appearance in test mode.
What i cant reproduce is  the background texture not applied to Grid2 real frames.
Note that by default background units color is "black", any texture applied to a black color, remains black and its not visible.