[2.8.1] [WTTG] - Becoming war leader when participating in an ally war after reload

[Dirt McStain]

One line summary of your issue
[2.8.1] [WTTG] - Becoming war leader when participating in an ally war after reload

Game Version
2.8.1

What expansions do you have installed?

Monks & Mystics,
The Reapers Due,
Conclave,
Horse Lords,
Way of Life,
Charlemagne,
Rajas of India,
Sons of Abraham,
The Republic,
Legacy of Rome,
Sword of Islam

Do you have mods enabled?
Yes

Please explain your issue is in as much detail as possible.
I'm playing an ironman game as the Zunbil Muslim Shah of Kabulistan (save attached). Last night, my ally, the Taghlibid Sultan of Sindh (tributary under the the Abbasids), called me into their offensive holy war against Rashtrakuta for Konkana. I accepted and quit the game to pick it back up today. Now, a few days in, I get a notification that I can invite the Taghlibids as allies into my war. Turns out, it's now my war against Rashtrakuta (and their allies, naturally), for the Taghlibids claim(?) on Konkana.

Mods (all graphical, all ironman compatible):
- + Minimap Makeover ~ Colour
- A Revolutionary Borders Mod
- Additional Dynasty Shields

I tried reloading through the continue button and by going all the way through the load dialog and I've turned off the mods, but since this is an ironman game, I'm afraid the damage is done and there's no way to go back.

Steps to reproduce the issue.
1) Gain an ally
2) Get called into their war (possibly only an issue with holy wars)
3) Quit the game on the same day (not certain if it has to be the same day)
4) Load the game back up and note that

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[Dirt McStain]

Can a moderator please change my thread title? I goofed.

Update: we lost the war, but when I was presented with the terms, my ally was the one who was listed as losing money and prestige. Of course, I accepted on his behalf.