Salt syndic with multi masters doesn't push events to all masters

[mmanea-tc]

It looks like Salt syndic doesn't push the events to all masters (anymore).
This change was supposed to be implemented in this PR
#43526

I have a salt syndic with multiple minions connected to it, and the syndic connects to two MoM.
When I am running this command from one of the multi-masters:
salt '*' test.ping
I am getting random timeout responses from the minions.

If I set the master_id option in the master.conf on the MoM, then it works correctly.
However, this shouldn't have been necessary, as per PR above.
Tested using 2018.3.4 and 2019.2.0 and I am seeing same behavior.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

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[Oloremo]

stale bot go away

[stale]

Thank you for updating this issue. It is no longer marked as stale.

[Ch3LL]

@mmanea-tc was this working previously?

ping @DmitryKuzmenko can you take a look here?

[DmitryKuzmenko]

@mmanea-tc do you remember what Salt version was working for your case?