Stellaris - New diplomatic trades would auto expire on day 1

[Bakalov]

Description
New diplomatic trades would auto expire on day 1

Game Version
Cepheus v3.4.2 (7836)

What version do you use?
Steam

What expansions do you have installed?
All

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
I am playing as vassal (i.e. Fiefdom origin). I make a new treaty with other empires (not my overlord) for trading resources per month. Then on day 1 they stop trading with an error message that my vassal contract has expired. I never had such contract with them though in first place.

Steps to reproduce the issue.
See above

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[Roaringdrunk]

Description
New diplomatic trades would auto expire on day 1

Game Version
Cepheus v3.4.2 (7836)

What version do you use?
Steam

What expansions do you have installed?


Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
I am playing as vassal (i.e. Fiefdom origin). I make a new treaty with other empires (not my overlord) for trading resources per month. Then on day 1 they stop trading with an error message that my vassal contract has expired. I never had such contract with them though in first place.

Steps to reproduce the issue.
See above

Upload Attachment
File(s) attached

This isn't limited to vassals. Works with other resources too. And you can use it to farm infinite favours.

 

[Bakalov]

You are trading it the other way around though. So in your case it looks like an exploit and in my case it looks like I am not getting what I traded for.