http://www.xcmag.com/2014/08/safety-notice-woody-valley-chest-buckles/

Woody Valley have issued a safety notice about their lightweight automatic
harness chest buckles. Some of them have been found to be faulty: the side
buttons ‘stick’ when squeezed, and don’t pop out to their original position.

Check your harness if it is fitted with these buckles. If they stick, contact
Woody Valley who will replace them.

Thanks to Jim Gibson