The Polymarket resolution for June 19th and 20th resolved as No because no military action occurred on those specific days, not because of later events.
This is a matter of discipline in adhering to market conditions.
Future events do not retroactively determine past outcomes, just as a meal cooked today does not change yesterday's shopping list.
The controllable factor was the absence of strikes on the earlier dates.
Claiming a later strike triggered this ignores the straightforward noise of the market's own rules.