Excel documents I have uploaded to a teams channel are missing the ribbons and tabs. I have checked to make sure in Excel that they are selected to be shown. I have not been able to find a setting that would restrict them or cause them show. Without seeing the tabs at the bottom I can not change tabs. I have tried closing teams , force stop, and it still happens. The only thing I haven't really tried is to uninstall teams, then reinstall. I have also tried zooming out and it doesn't help. I am able to see the tabs from the phone up, but not on my desktop.