I also had a similar problem on the 1.25am at Thurles.

I backed Kazal for a win and it won. I also layed Nay which lost.
Two and a half min before the race "suspended" came up. The place market was not affected.
Not only that, my bets vanished into the ether. Checking my account, I found they had been voided.
I gave up and went to bed