Ritual seats can be "related to" other ideoligions and will cause a mood debuff when placed in a room even if the seats are built by a colony member of the correct ideoligion. This is especially problematic for bigots since the ritual seats appear to count as "diverse" surroundings.
This bug has been reported by others, but remains unsolved:
https://www.reddit.com/r/RimWorld/comments/op1xop/suggestion_or_bug_shared_ideological_buildings/
https://steamcommunity.com/app/294100/discussions/0/3042732243096630841/
Thanks for the bug report. In the linked posts you showed it had a solution, stating this only occured with no style selected. However in 1.3.3157 I am unable to reproduce this bug. I have given my ideo intense bigotry, removed styles, and placed him in a room with seating that is belonging to other ideos, and there is no mood debuff for diverse surroundings, even if kept in there for over a day. If you have a save of this occuring still, please upload it, following the instructions we have in 'how to post a bug'. If not, I will assume it has been resolved.
The "solution" it showed on the reddit was linked to the user not having a style selected. On the OP's case, and mine, we do. The bug is still present as of unstable build 7865289.
As of 1.3.3209 I am still unable to reproduce this in vanilla RimWorld. I notice in both posts, the games are modded, I can only assume this is a bug in modded saves.
To reproduce this I have created an ideo (with a style) with intense bigotry that has the same seat type as a different ideo with different styles, etc.
https://i.imgur.com/FN1R9CD.png
https://i.imgur.com/cET8foA.png
As you can see, this bug is not occurring for me, please let me know exactly what I'm doing wrong in reproducing this (with specific steps), or provide for me a save of this occurring in vanilla rimworld. If you need help in figuring out how to do that, you can see instructions in the stickied topic "How to report a bug."
Sorry for bringing up an old bug, but it happened to me aswell.
I believe it has something to do with fluid ideology, because i noticed the ritual seating was made before i reformed the religion, and deconstructing the seating removed the debuff. This correlate with seating being directly related to a religion and not to a style and new religion != old religion.
If i make a new seating the debuff returns. By making a lot of style buildings near the seating i am able to remove the debuff.
this was on 1.3.3200
No problem posting on an old report as long as it hasn't been locked etc. Do you happen to have a save of this occurring? That would really speed up trying to reproduce this.