Enjoy!
Well I hope you selected to Douse fire to start with, else it will just plain ignore fires tbh.
If you did select douse fire => Have you tried zooming out all the way, that should have fixed all your issues. It will only douse a fire if it's actually visible ont he screen, else the client will try to walk closer and walk into the fire before dousing it.
Which you don't want either right ^^
I've played over 5k games on 3 different accounts, it does run into fire once ina while, even when you play by hand that happends.
There are a lot of scenarios were the whole area gets over run by fire, can't avoid those anyway, it's still a abot, not a human.
There is rarely a game that's under 2k points, send me some screenshots or a gif if you see this again so i can see how your setup looks.
Yes, will be a fix out later today