Ion-refresh not working on 1.0.0-rc.5 “tungsten-turkey”

Our app have been using the version v1.0.0-beta.14 “magnesium-mongoose”, working fine showing the refresh spiral icon and the pull arrow for a list of items.

We just update to the latest version rc-5, but this icons stop showing. We tried to downgrade from the 5 to the 0 but the problem still persist.

We are not rewriting any html or css files, and we are using the default ion-refresh code.

When we tried the beta-14 again the icons start showing, so we are sure it is related with the rc-* versions of ionic.

any thoughts?