Found a case of this happening again. I attacked theallmightyemu and lost due to a warehouse being hit. This vassalized me to him. I then attacked again, and won the combat via munitions clause, but remain vassalized to him. Local time was 7:48 AM, so server time should be around 9:48 to check timestamps on the logs.
It's pretty clear what happened here.. you thought you were attacking emu a second time when in fact you were attacking xade.
198 09:48:20 COMBAT! defender theallmightyemu message inanimateJ attacked us, but we won! They lost more buildings than us! 199 We were awarded a an uranium ore bounty! 200 Objects tithed: 2 coal 201 Munitions used: 5 coal 202 No buildings lost, but a tree was destroyed. 203 attacker inanimateJ message: We were defeated, we lost more buildings than them. 204 Objects tithed: 2 coal 205 Munitions used: A coal and an uranium ore 206 Buildings lost: A warehouse. 207 09:48:20 AH LOOP STARTING !!! 196 208 09:48:24 user 2 was set.. 209 09:48:26 COMBAT! defender xade message inanimateJ attacked and defeated us, they used more powerful munitions than us. 210 Objects tithed: A sand 211 Munitions used: A coal 212 No buildings lost! 213 attacker inanimateJ message: We won, we used more powerful munitions than them! 214 Objects tithed: A sand 215 Munitions used: A coal and an uranium ore 216 No buildings lost!