Thanks Amin. I think you have it. I first spotted weirdness about 3 hours ago, I think (it has been a long day...)
BTW a word on Tapatalk. The recent "upgrade" (V4 I think) is complete and utter rubbish. Apart from having a new layout that had been designed by a hyperactive toddler, it was causing my Galaxy Note to overheat... I deleted it and went back to "Tapatalk Classic". The worst thing was that it was much harder to moderate using it. I am out and about a lot, so it is one of my main means of access. Nothing more than a "be aware" but I thought I should mention it.