We hav ea 5508 pair running in HA mode. Initially the conrollers were running the 73..101.0 code. We were having issues where the primary controller would software reset (according to show sysinfo), the secondary (HA SKU) would take over and then after a few hours the secondary would also software reset and the primary would take over. Also I notice that after this happens that the Tx Power Control doesn't seem to adjust the A radio settings, most of the radios are at the 6 level. Normally they are 1, 2, or 3.
Last week I upgraded to 7.3.112.0, later that day the same thing happened.
Seems from what I've been told that there really isn't a stable release for HA. Just trying to confirm if others are seeing these types of symptoms.