You can see the text of the other speaker warnings if you "mouse over" the warning.

There are some reports on reddit about occurrences of this bug.

Massive artillery train, video of changing controls, firing, destroyed train at the end.
Another report, OP confirms swapped controls in comments

Seems like it's definitely triggered by swapped key bindings.

I have the same issue. And now with the artillery there is a new side effect : When artillery attacks, bitters must attack the artillery, but they stay stucked. While they do try to move to my artillery train if they're not frozen already, they will get stuck and stop moving when I move the train o...

I also think that a big, monolithic logistic bot base probably is an easy and less challenging style of play. But instead of removing logistic bots entirely or just nerfing their skills, you might also consider to nerf the ability to build big, monolithic and boring logistic systems. If there was a ...

I've been experiencing frozen biters, too. It's been this way since 16.0 and first I thought that biter aggression levels have been reduced. This is what I saw in 16.6 https://i.imgur.com/5Eizm5B.jpg I tried to activate them with some artillery shells, but they didn't care https://i.imgur.com/CJhvFK...

Since tanks don't take tree damage anymore, could you drive through the trees and burn the forest behind you as a workaround? I did try the new "tank takes no damage while driving through forests" approach first. The Tank is still slowed down for each collision with a tree, that's why you...

I was driving the tank at or almost at its full speed and fired the Tank Flamethrower forward and slightly to the sides to clear trees ahead. The Tank took damage from its own Flamethrower. I had to drive slower to avoid the damage. Only firing straight forward in the travelling direction and not ev...