I use hammer/shotgun on my alt. Since both weapons are sheathed on the back in the same direction, they overlap and that looks stupid. So I configured the shotgun to be invisible when sheathed :
When I now stand there, with my hammer active, the shotgun is not visible. This is fine :
When I activate sprint at this point, the hammer is put on the back and the shotgun is not shown. This is fine too :
However, if I activate sprint while I have the shotgun in my hand and the hammer on the back
I end up with both weapons being invisible. This is not fine :
On another alt, I tested a similar setup with Blade + Elementalism Focus and this does not happen with that combination.
Bonus issue : I tend to lose sprint a lot of times once the sheathe animation finishes after sprint is already active after a fight. (This also happens in TSW.)