Can't edit page because it is "popular" and open by me many times. Even though I have only one tab

[marina]

Sometimes it can be fixed by itself in the question of some hours and sometimes of days. It is very annoying when I have created a document and can't work on it or share it with a team. 

[Nic Brough -Adaptavist- · Accepted solution]

Welcome to the Atlassian Community!

Try closing your browser, and clearing the caches and cookies.  The browser can collect multiple sessions (especially when you've left for a while and come back, and had to log in again), and this can lead to what you're seeing.