If you would like to try to solve the issue yourself, try these steps.
1. Reload the page normally.
2. Reload the page with 'CTRL + SHIFT + R' (will reload every part of the page).
3. Go to settings, scroll to the bottom of the page, and click the buttons to reset data.
If none of that works, please submit a report and wait patiently as we try to fix it (or submit a pull request on
GitHub).