Please post "Diagnostic Info" from Admin > Troubleshooting.
- That is available in the Revision History, which is available for dashboards and questions - on questions, click the pencil-icon next to the title - on dashboards, click the three-dots in upper right corner.
- The header is sticky, when you're in Edit-mode - I'm not sure which version you're using, but it's been sticky for a while. Latest release is 0.38.2
- Again, I think this has something to do with your version or browser - Metabase shows diacritics: