Recently upgraded to Unity Connection version: 10.5.1ES78.11901-78 from 9.1.2ES46.12900-46.
After upgrading we are experiencing an issue whereby the pub continually fails over to the sub without any obvious reason for the fail over. We've experienced this bug before on 9.1.1 which was the reason for the upgrade to 9.1.2. There is no bug case that is established for this issue on v10.5(1)SU1a. Pub is still taking calls in secondary state but obviously the need for stability between the nodes is necessary.
Anyone else experience or know of any issues on this most recently released version?