I have a fix ready at https://github.com/jharting/core/tree/WELD-1619

Can you verify? The only change you need to do in your code is to assign a unique ID to each Weld instance you initialize. An example is here: https://github.com/jharting/core/commit/7041b2dcf12d3493df1f72f36a28f13de9a571da#diff-8a193e7d588d5c56d9a1de45e72902aeR38