Hello

It may be intentional, but it's not explained:

When researching for ships or vehicle or trains pollution, if there is no research set after, it will research on a loop and never stop.

It could be a cool feature to activate on purpose, but it would be beter with a switch for the player to activate the loop, as it will use resources. The loop would be best for all three or any of our choice instead of always the same one.

I was waiting for "that last research" to finish, to do something else, and look at it not often. When I realized it was looping I was on 17 instead of 5 or 6.

I'm glad to be on easy mode :)