Weird bug post meta data

Hi master,
I have a weird bug since I have the 3.8.1 version.

I use a theme who need meta data post.

When I update post in admin, I loose some part of data when it’s too long.

I am sure that it is my cache because when I remove it, all works fine.

+ I find that it is the key “options” is bugged.

I search for a couple of weeks but I don’t find any solutions.

Do you have a councils for me or anything else 🙂

Regards,

https://ww.wp.xz.cn/plugins/memcached/