After successfully upgrading to Windows 11 Home (22H2), I found that the VAST majority (but not all) of my many icons had disappeared from their previous fences and I eventually discovered that they seem to have appeared (and significantly overflowed) in my NEW ITEMS fence. I don't see this as a reported problem here.
I have tried purging and reinstalling (having seen all/most of my icons unsorted onscreen in the process) but when I 'Apply snapshot' of my previous arrangement, I get the same layout and sorting as described above (see below):

As there are about 5 pages of icons in New Items, any help gratefully received ASAP to avoid the need to move them all individually!
Thanks