Java_avaJ <lol> You think you deleted it, but there is another bug, or perhaps intended behaviour. If a user deletes a post after the edit timer expires…it looks deleted (to you), but it’s not. If you refresh your browser, I bet it magically reappears.
The edit time is 10 minutes, because this version of flarum is bugged for setting other edit time strategies (you can set them, but it doesn’t work), apparently fixed in version 1.2 released a few days ago. So once freeflarum updates their version, I can have perhaps a more sensible edit time.