I have reproduced this twice ... once going back to the autosave this morning ... and anticipating the possibility the same encounter will get stuck, I saved just before initiating the combat and, indeed, the bug reproduced and a second time after reloading my manually saved game.  I recorded this bug with Microsoft Expression's screen recorder, am encoding it now and will then upload it.

Savegame:  https://docs.google.com/file/d/0ByxJB3KvvsoJX0N2cm04ajAwSEU/edit?usp=sharing

To trigger the bug, from the savegame, use Gazella's army and initiate combat with the Hergon's Army to the northwest.  I use Rush to get to the Hergon first (before the Hergon Sows) and cast tame (with Gazella's mastery, Tame only has a 3% chance of being resisted).  Cast +Web from the spiders and +Slow from Gazella to immobilize the Sows (the +Slows help the +Web last longer and give a better chance the spiders' Web ability will complete its cooldown cycle before the Hergon Sows are able to -Web).  Yeah, its a tedious grind, but this is how I play Beastlord ... the infinite tactical turn bug has occurred each time after the second-to-last Sow has been tamed and the cooldown for Tame has almost expired to Tame the last one ... twice its been the Hergon, the last time it was a Hergon Sow ... the unit will suddenly have multiple consecutive turns (13 for the Hergon if it hasn't been +slowed itself, or with the Hergon Sow which I had +slowed, 4 turns) ... but no matter how many times you skip its turn, its turn will never expire (the multiple consecutive turns are infinitely replenished).  The only way to complete Tactical combat then is to kill the last Hergon Sow ... Gazella's turn will never come up again so it cannot be +Tamed as I would prefer. :/

This occurred again in a new game attempting to +Tame 3 Silt Skaths.  I've never encountered this before 0.92, so it seems to be new to 0.92.  Was something changed with the +Tame mechanic, or possibly how tactical turns are ordered that is causing this?

There do seem to be new quirks with tactical turn ordering, even when I don't encounter this ... turn shares seem a lot less even than they used to be.  Yes, I am well aware that "initiative resonances" normally cause one unit to occasionally get two turns in between an opponent's turns, but I have seen one unit getting a turn, then another turn just a couple other units' intervening turns in between, then not getting another turn for a long time.  Its rather difficult to describe, but its almost as though Initiative fluctuates (even without +Slow, +Haste, +Rush or +Command)