After I upgraded from Rails 3.2.2 to 3.2.3, Active Admin adds a
at the beginning of each <textarea> field. I'm on master and using formtastic 2.1.1 (because of #1224).
This is a real problem of the new Rails (not active_admin)... I see that they have recently pushed/accepted this into Rails. I have no clue why.
The solution I use is that I use html.haml instead of html.erb
I always used haml, not erb and still experienced the issue. For the time being I downgraded to 3.2.2.
@AngeloMichel For posterity and for those who have no idea where to look for what you're talking about (me included), would you mind linking to it?