Did you add "smotainer/" to each wildcard spec? It looks you might have missed the "*.py" spec.
When you retag are you doing Project > Retag Workspace..., and is "[ ] Retag modified files only" unchecked (which means to rebuild the tag file from scratch).
Also, it looks like some of the excludes are unnecessary, considering your wildcard is "*.go". That should not cause any problems, just adds complexity.
Otherwise, what you were doing appears to be correct and should have worked.