Will offer my way of fixing.. probably something went wrong in the themes, aside from css, probably version mismatches with the core nodebb version your using. The below will revert to working vanilla and lavender theme versions that match w/ your core nodebb install version. (probably need to stick with whatever theme versions it reinstalls, because I've always had problems w/ updating themes, I don't upgrade them anymore) Stick with what came with the nodebb install originally. This will revert back to originals:
@julian I have seen the 0.2.0 version of Persona in the admincp and the "only cleared to upgrade to v0.2.0" message with the 0.7.0. Ended up moving to the master / 0.7.1 branch to get rid of some issues which I could not figure out.