I added this code added in my header :
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
And I just spent way too much time identifying a problem, which is the addition of this Bootstrap code in my theme that reduce the length of some fields *see 2 images
Now that I know what the problem is : Any idea how to fix this ?
Thanks for any tip you may have