No, it does not change things, what Christopher said above remains true.
This issue seems to be weird because at first, I was able to replicate the issue, Blog Header is showing even if I turned it off. But then after doing some testing, I can not reproduce the issue again. Try doing this:
Turn on the Blog Header then empty BLOG TITLE and BLOG SUBTITLE then turn it off again and saved. Then turn on the Blog Header again and fill BLOG TITLE and BLOG SUBTITLE then save.
Then check if the original issue still remains.
Let us know how it goes,