There isn't much on the day to day posts on the general boards that's of any real interest to me.
This thread on the other hand is imo one of the most important and interesting threads I've seen on BYC.
In June 2019 I posted this thread.
https://www.backyardchickens.com/threads/nuerological-or-something-else.1318208/
As you can read, there wasn't a resolution really. Bracket just got better eventually. I had searched the internet for something similar and asked my chicken keeping friends in Catalonia who often had answers one just doesn't find on BYC. It remained a bit of a mystery and I put it down to experience and the fact that Bracket was a rather strange hen at the best of times.
Then this thread appeared.
https://www.backyardchickens.com/threads/something-strange-is-happening-with-my-hen…-updates-with-video’s-attached-any-help-and-suggestions-needed.1578646/
The OP has some very informative videos and the two cases have such strong similarities as you will discover as you read, that whatever the problem is, the behaviours are so similar it's hard not to conclude that the causes, whatever one chooses to believe, are similar, if not identical.
This is cutting edge stuff. We know very little about broody behaviour in general and obsevations such as mine and CaliforniaMountainChicks seem to be the only records of such behaviour. I would think that if this has been noticed at any time before and been posted about it will have been dismissed as Wry Neck and the usuall recommendations would have been forthcoming.