Trains don't leave stations if bonus train capacity focus turns off mid-travel

Steps to reproduce:

• Start the game at speed 1. Wait until train leaves station B. It will take a job to pick up 492x3 steel from station A.
• Turn off the train capacity bonus from the office before train reaches station A. This will reset the wagon capacity back to default 480.
• Train will load 480 steel in each wagon. But because it had reserved 492x3 steel originally, it can't leave the station before that amount is loaded. Even if the focus turns back on during this point, some cars are already loaded with 480 steel, and the train will be stuck until player intervenes.

Here is the save game for reproducing the issue.

Originally encountered by @eduelias [discord], I thought it is an issue worth making a thread for.

I'm having a similar issue, but I don't know of any reason my offices would have turned off. Food and Med network trains are getting stuck at the loading station, even with the first bay of the car fully loaded to bonus capacity level, but it is not moving forward to load the second half of the car. Save should load looking at the loading station. At least the train in front is stuck, possibly the second one as well.

I'm also having that even after disabling the bonus and reloading the game ... 🙁

I have the same issue after recent update. Some trains sit at station stuck in 'at station' status after fully loaded, only job cancel will result in move to next task. I turn off the office but no change.