I had this issue in the past, and I don't remember how I solved it. After updating, my header defaults don't stay and are sometimes incorrect.
For movies, I have headers in the order of "Title", "Date Released", "Unwatched Movies", with "Date Released" being the default. But whenever I go into the movies section, "Date released" is selected, but the titles are in "Title" order. I can then switch to a different sort option, and go back to "Date Released" and they'll go back to the proper order. Just kind of a minor annoyance that I'd like to fix. Same thing happens for Recorded TV.
I tried a simple reinstall, but that did not resolve the issue. Any support is much appreciated, and as always, thanks for such a great product!