I have been doing a bit of testing with NodeBB on this forum, in the testing board. Mainly clicking buttons on existing topics, such as flagging a post. However, when I clicked to flag a post, the dark overlay went over the dialog box and I was unable to click it. I had to reload the url to remove it. I tried further testing and I came up with the same errors, such as wanting to discard a post. Here's a screenshot of what's happening.