Missing deployment slot?

[DocTsiolkovski]

Hi all,

is there a known bug with slots? I've deployed units worth 79 slots in Dover, but the game counts 80 / 80. Noticed it at start of Brighton, when the game suddenly counts correctly. And no, I didn't abandon a halftrack, and had zero losses.All saves avaialbel.
I have a zero slot and a reduced slot hero, maybe this confuses the engine? Anone ever seen that?

[Stormchaser]

I've had this happen once when I downgraded an Infantry Halftrack back to a Truck but the Infantry kept the +1 Slot Size Halftracks give. I was doing a bunch of other up/downgrades at the time, so it might have just hiccuped from trying to register the changes fast enough.
I think I ended up restarting the Scenario and it didn't happen the second time.