2-way master-slave setup

[alttab]

Hi, i am trying to setup a 2-way master-slave setup with device sharing, but sessions keep getting disconnected.
(Both domoticz servers have devices i want both of them to have.)

I am using different ports ( domo1: 6144, domo2: 6145
Only 1-way seems to be working, one of the two connections keeps getting disconnects.

Is this by design, or should it be possible to share devices between 2 instances (2-way)?