Hello, I got the message in the title when trying to operate with a workstation.
I noticed it happens when the server lags some and I close a container, quickly switching to recover materials from a bag container.
The container dialogue seems to delay a bit and fire at the same time as the workstation one, causing the second to remain 'orphaned' and stuck in a dialogue with myself (abandoned).
Maybe a flag may be added to the character starting a convo so, that another can't be started for a couple second more?