When moving a community app within the page layout - it has the following options:
However, when you move to previous, it goes to NEXT.
When you move to NEXT column, it goes to PREVIOUS column
It's like the navigation of that is reading from Right to Left, and people generally read from Left to Right in most languages. The current way therefore is UX illogical.
BTW - this has been investigated and it is working "as designed" (that is for Chinese devs that read from right to left - which is not most readers) - and the IBM dev agreed that it was off, but did not want to fix. This type of UX reflects poorly overall on the product.