[1.0.1.332] AI civiliations declare wars on conquered civilizations

After 1.0.1.332 patch, AI civiliations declare wars on conquered civilizations. There are notifications such as these on images below



with no civilization mentioned upon which the war has been declared, only its icon.
Most of the time this happens some turns after conquering a civilization which were allied with city states.

Here is a save game file, there upon loading, such behavior can be observed.

http://www.mediafire.com/?4sycsxxkkojz6om

I had a situation in a game recently where Nebby and the Incas jointly declared war on a civ which I had eliminated (Ottomans)... When really they declared war on Monty.

Don't know if this is a known bug or not, but if so, I couldn't find it.

It's similar to the one above, but they really did declare war on Monty (not the Ottamans)... using a save I found that the notification was now correct (against Monty)... but the original came up the same as the OP.