Hi Dimas I understand this may not exactly be up your ally. but it seams to be a t3 issue more than a k2 issue and since I don't have support from them I have no idea how to solve this. any hint would be appreciated :) I understand if you can't help....
I see, so this is related with T3 and K3, and not come socialize.. this is coming from conflict class .modal, for temporary solution you should modify K2 itemlist page, and remove class="modal" on "edit item" link