Thanks for your finding. If you have a short click the sheet should open. Having a long click a little menu will shown: edit / remove.
When I click on edit I see the page you show in your post. Thats an error, of course. The idea here is: open a form to rename the sheet. No more today. Saving the sheet with a different name will do the trick too.
Please try again: create a new sheet (can be empty), save it and then try to open. Will it work? Maybe you find something happens before (when saving e.g.).