Problem on nodes with a lot of paragraphs

If this only happens as your node grows, you might be hitting the Apache headers limit. See 🐛 FinishResponseSubscriber: Need warning/error when headers exceed 16k Needs work

Thanks for the answer @idebr.

I don't think the headers are the problem, it is not too big. The payload is. It can be 160kb.
Also the biggest problem is there isn't a single clue. Apache logs are ok, drupal logs too. The ajax responses a 200. Everything looks normal.

Hi Manual, we use nodes with up to 600 paragraphs! Well...we are expecting 600 paragraphs. We are now around 250. It all seems to work fine, but we are experiencing issues too.
We have many users that own this type of node and can add paragraphs. Some of them experiencing that not all newly added paragraphs are stored, when saving the node. They must save after every paragraph added to be sure it's stored.

I try to get it more clear but can not reproduce yet. I bumbed into this issue, perhaps it's related.