-e: On Linux, you can't call AssetBundle.Unload(false) at all. The first call will report: "AssetBundle.Unload(false) shouldn't be called..." error. If you follow it up with an additional "CreateFromFile" call, you will get a "Asset Bundle cannot be loaded because another asset bundle with the same name is already loaded." error.

Works well on Win & OSX

-repro:
--build attached project as dev version
--copy the bundle into the Data folder
--run build
--click Load Asset
--click Unload Asset(false)
--NOTICE error being thrown
--click Create Instance
--NOTICE error begin thrown