If I colapse TMSFNCRibbon and then try to pin it again, I will get an AV.
This is happend even with your provided demo.
If I use TMSFNCHint in conjunction TMSFNCRibbon and I colapse TMSFNCRibbon, Hint is showing as is standard hint , without HTML capabilities, and color that I settings.
Sometimes, after that, FastMem showing memorry problem when hint is triggered.
If I maximized application and then I do double click on the caption, this is restored but with strange width.
This is happend even with your provided TMSFNCRibbon demo.