This is an interesting behavior, my best recommendation at this point would be to open a Case with a Care engineer for on the routing team. This sounds like a bug and they will need to do more technical investigation then what we can do in a public forum. Please provide them with an interaction id showing this behavior and the name of the two agents and they will be able to help you out.
Cheers,
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Cameron Tomlin
Online Community Manager/Moderator
Genesys - Employees
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