How textures manager works? (SOLVED)

Looks like my example works good on device (texture unloaded) and didn’t work by cmd+b (why it doesn’t work on mac test build?).

But if somebody who made textures management give more info (something like great post about draw calls for example) - it would be great for understand how it works.

UPD:
I Just tried the same thing in the main project and texture didn’t unloaded (it is preloader texture, and I try to remove GO with preloader GUI after main gameplay proxy was loaded)
I really don’t understand how it works.