Hello everyone, hoping for some technical advice/reassurance. Hopefully you can see the attached video.

Story is - I thought I would manually wind my watch after a few days of not wearing it, to top it up and it started a new significant click. Happens exactly at x1 rotation of the crown in Position 1 only and when screwing it back to locked position. Position 2 (date adjust) and 3 (time adjust) are normal. Winding doesn't make the barrel spin at the back.

Watch seems otherwise normal, keeping time, Chronograph working etc. When I have manually wound before it never clicked and just went on and on, no resistance.

After reading forums, I thougIt I would leave it to rest to 'unwind', on assumption it may have been overwound, but the problem is still there.
Does anyone have any thoughts? Is this serious? Does it need attention?

Thanks for any replies in advance.