ITEMS TRADED FROM MARKET DISAPPEEARED

Hello,

today i've reached level 20, so i traded some of my stuff to buy 2 cat's paw from market.
Seller accepted my request and i retrieved my itemes.
Something like an hour later i was assigning skills, when my skill options were suddendgly reduced.
Long story short: two itedm from market disappeared. With all my (leveled up...) gems. :(

I wonder: is a bug, or exist a "trick" to recall a sending offer even after the other part accpted ?

Thanks for your attention.

Check your weapon swap.