I found a bug while testing my Flarum instance after upgrading to beta 9.
The bug happens only if the Home Page is Tags (settings un the Basics section of Administration).
When I load the home page for the first time and then click on a tag, it will show me all discussions, not only those with the selected tag. When I then reload this page (the page of the tag), it goes back to normal and only discussions from the selected tag are visible.
I managed to reproduce this on a blank Flarum instance without any third party extensions.
Should I open an issue on GitHub ?
