On the Oasis map after you blow the second gun there is like a 3 second delay before it announces you won.
I planted at like 32 or 31 seconds on the clock. The gun blew before the timer ran out, but because of that 3 second delay it claimed axis won! I shoulda taken a screen shot.
Smartypants
Never had this myself luckily but I heard about the problem before from others. I don’t reckon it’s that big a problem as it’s bound to happen only seldomly, but I can only imagine how frustrating it must be to have it happen to you, especially if the match was a really hard fight. I did experience dynamite being planted after the timer had reached 30 seconds a few times though, meaning that you’ll see the objective blow while in the geberal chat window :eek3: :disgust: :bash: :banghead: 
I once planted dynamite just a few seconds too late, was really frustrating actually 
This is a known glitch on Oasis. Leagues such as TWL have made specific rules for this in their campaign ladder and if the allies plant before 30 seconds and blow the last gun, but the game announces that the axis won, then the allies still get the win.
In fact this happened to my team while playing on Axis. The other team did plant at 31 seconds, yet the end of the game announcement said ‘Axis Wins’ We awarded the win to the other team.