Yes, the QtQR code includes a zero-width non-breaking space as first character, I made a fix to remove this character from scan results if necessary.
It works now for me, and will work for you with the next release as well

Sounds like the generated QR code is slightly non-spec-compliant. It should contain only the URL characters, not invisible spaces or other weird stuff.
Of course, handling off-spec data robustly is good, but you can only work around so many errors...
Onkel Paul