I reported the heading issue to Sean at the end of July and this was his response.
“yeah... that's a tougher one. I don't think that's going to make it in the (free upgrade) 2020 release, which I really need to get out ASAP. I also plan for a 2021 release, which I'll try to get that into."
Sean Reilly on 11 Aug, 2020 08:49 PM
Yes, the problem is that the html viewer that is used for the reports is apparently not aware of the "sticky" css attribute that's now used in the headers. There are a couple of embedded browser options which will likely address this, so this will be a short term issue.