Hey, thanks for the detailed report.
About the navigation buttons (Go Forward/Back), this is a known issue and the team is already working on a fix. A similar report is here: Navigation controls disappearing from toolbar
About the Toggle Panel context menu that renders under the window buttons, I’ll pass this to the team. It looks like a new z-index layering issue.
Neither bug blocks work, but I get that they’re annoying. The team is aware.