Right now, in the Windows 7 and Modern styles, "allocate number of icons" is limited to 30, and "split into columns" is limited to 8. I think both of these values are just a little too low, or at least the "allocate number of icons" is when split-into-columns is enabled. It seems to be using the "allocate number of icons" arbitrarily, instead of what's phyiscally visible on my screen, to determine i.e. how many rows should be displayed in the "recent items" list. Not a big problem, I mean this prompted me to clean up my start menu a bit, but still. Perhaps it would work better if "allocate icons" meant the number of rows being allocated, and the actual number of icons was derived from that instead of

Another problem is that right now, when you drag pinned Start Menu icons to rearrange them, there's this little black bar that appears directly below the icon it's going to be displayed after. The problem is that in multi-column mode, the icon is being moved to the right of the icon it's going to be displayed after. I mean, I understand why it's doing that, but it doesn't make sense with regards to what's actually happening. Alternatively to placing the vertical bar on the right in multi-columns mode, it could behave like the default Windows 10 start menu and have icons move out of the way to show where the new item is going to be placed ...

Basically, Start10 needs to be slightly more aware of when it's in multiple-columns mode.