If it's only when parts of it start going out of view I guess that's ok since it's really only allowed to resize smaller than startup to show the new ribbon resize features... maybe changing HasDC to False on the PictureBox too would help?

But one more question if you don't mind; are you using the RichEdit DLLs that come with it (the download has a riched20.dll and mtpls.dll in the build folders), and if so are color emojis working (are they in color like the picture or just black and white like the plain text)? Looks like that might not work on Windows 7; it's crashing on my VM. But that might be because Direct2D acceleration is broken in general (why Aero can't be enabled on the VM) so I'm hoping it's just that.

If you're not sure whether it's loading, the difference would be visible in the startup text, it either says "Welcome to the Advanced Ribbon w/ Direct2D Demo" with several emojis or "Welcome to the Advanced Ribbon Demo".