We have a text field were we want to put quite big HTML content (955 lines). We were able to do it without problem a few weeks ago, but now it's cutting the content, apparently always at the same point (around 65.000 characters).
EE let's you copy all the content, but when you save the page, it cuts it.
We haven't changed anything in our EE installation lately, but we made some changes to our PHP configuration for other reasons (so I guess it could be PHP related, but we are not sure and don't know how to fix it).
We've tried "pasting into the field and selecting another field", as suggested in https://expressionengine.com/forums/archive/topic/229708/problems-cutting-pasting-to-textarea-channel-fields, without luck. I haven't found more articles regarding this problem.
We are using version 2.10.1 - Build Date: 20150501.