in some edge cases this could be triggered:
The following error just broke Piwik (v3.0.4): Variable "topMenu" does not exist. in /var/www/piwik/plugins/CoreHome/templates/_topBar.twig line 1
Can you explain an example when this happens? If used correctly it shouldn't happen. Wondering if this just hides wrong implementations in the future eg not calling correct setXVariablesView in Controller etc.
Won't merge this as I'm not too sure how this occured