Bug for javelin in cube adding sockets

Tried adding sockets to this item in the kube 2 times an it took the 2 runes an gem but did not add a socket at all figured id mention this in hopes of it getting fixed.

Welcome to the forums. Throwing weapons, such as javelins, can’t have sockets.

Ah okay but then why does it still take the mat’s in the kube if it cant shouldnt it fail an not take the mats?

If it’s taking your mats, then that sounds like a bug. You’re correct that it should just fail and not do anything.