Nemo generates thumbnails in icon view from end not top

That is rather frustrating. I've tried to use icon view as default in Nemo to quickly get a glimpse of what kind of images a folder contains, but Nemo shows (generates?) thumbnails in icon view from the end, not top. Whereas in list view I see it starts to show thumbnails from top and go to the bottom (just noticed that while investigating). So it is faster for the purpose to have list view as default and switch to icon view after opening the folder. Any idea for the reason? Where can I see it in settings/code and fix? TIA Nemo 5.4.2, Linux Mint 21.