Before the `height: 2.5em` was applied to _both_ the visible
<textarea> and the $clone. While this shouldn't make a difference –
one of the first things .adjustSize() does is setting the $clones
height to 0 – it somehow triggered that Firefox bug.
With this patch we remove the `height: 2.5em` before handing over to
OOUI's .adjustSize(). It looks like this fixes the issue. We might
be able to revert I7560ceb then.
Bug: T317369
Change-Id: I96c2d7d7bf359ff0373d478b2b7e97c8833ba5b6
I tried to review all of them. Some of the changes I did:
* Make sure the `config` parameter is not marked as optional
when it is not.
* Make sure default values are mentioned.
* List individual `@cfg` options when it makes sense.
Note I don't list all options a class could accept (e.g. via all
its parent classes and mixins). That's too much. Instead I checked
how a class is actually used and list only these options.
Even then I don't list everything, e.g. unspecific options
like "classes" that can be used pretty much everywhere.
Change-Id: Idf4fbe1dc3608ace277df9e385f2f140df3a2f50
