HoI 4 - HoI 4 - [1.5.2] & [f49b] - Can't trade with bordering nation

[unperson]

Description of issue
HoI 4 - [1.5.2] & [f49b] - Can't trade with bordering nation

Game Version
1.5.2

Enabled DLC

Death or Dishonor,
Waking the Tiger

Do you have mods enabled?
No

Description
I am Hungary in the screenshot and trying to trade with the Soviet Union.

I can no longer trade with anyone because " no trade routes detected", despite having a common border with the nation I am trying to trade with. I have also traded with them for a very long time until suddenly I am no longer able.

Steps to Reproduce
Not sure. I was trading with the Soviet Union just fine before, nothing seemingly changed to case this.

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[Da9L]

Hi, that seems weird indeed, do you have a save on that?

 

[unperson]

Not anymore unfortunately, it was ironman save and was overwritten.

The strange thing was that as in the screenshot, Bucovina province was completely soviet controlled and bordering me, but trade was disabled....however, as the soviets took a few provinces from Moldova state (partially controlled in the screenshot) the trade started working again.
So my guess is that for some reason Bukovina was not counted and Moldova was only counted as neighboring when soviets controlled more of it.

 

[bitmode]

@Da9L I think this is not a bug because trade routes need to go through a chain of controlled states and Bessarabia/Lwow are still both controlled by the enemies in that screenshot. Attached is a save game with the reconstructed borders.

 

[unperson]

But Bucovina is completely controlled by the Soviets and it shares a border (at least visually) with North Transiylvania, that is completely controlled by me.

 

[bitmode]

But Bucovina is completely controlled by the Soviets and it shares a border (at least visually) with North Transiylvania, that is completely controlled by me.

Yes, but the trade route needs to continue until Moscow and Bucovina only borders Bessarabia and Lwow towards the east, so the trade route is cut off there.