It was a typo - I have corrected the RW version to 7.5.5 - I had been away from RW for some time and rejoined with RW7, to upgrade its another £56.00 - but I designed this site a few weeks ago using 7.5.5 and it was fine until I opened to do a couple of tweaks last night (with stacks 4.1.2 waiting for me); all of a sudden multiple columns don’t work (in full width preview), they just revert to a single column, left aligned - I also have a few issues with single columns with images that will no longer centre (left aligned in full width preview no matter what I try to do, replace, new stack, new page, etc. - I’m using Catalina 10.15.7.