Yes as I said it would appear updates are rolled out in different areas on different dates. I have just gone and changed my App settings in Store to 'do not update' and will leave it like that until this is resolved. I didn't realise when you said you could download more collections and have them appear and the scroll bar come back that you were being charged for them - that's outrageous even if it is only free points they are charged.
Hopefully more people who are experiencing problems will also notify Microsoft (I'm not sure I would even know how to go about that) but I am not confident that they will correct it anytime soon as I suspect it is mostly used as a free version.