[TYPO3-content-rendering] Problem with figure element

[Jordi Mueters]

I never really had this problem before, but suddenly I got the following:

I simply create a content element in the BE, Text and Images, and insert 
my lipsum text and just a simple picture.
The text shows up fine, but it seems like typo3 inserts the following in 
the FE:

<divclass="csc-textpic-imagewrap">
<figureclass="csc-textpic-image csc-textpic-last">
<imgclass="bowidnnbjwnneiesfmfv"width="240"height="400"alt=""src="uploads/pics/black_240x400_1_.gif">
</figure>
</div>

So inside the, for me unknown, figure element (html5 element or such?) 
it inserts an img element which should show up just like that.

It doesn't. In fact, it doesn't display anything at all, not even a 
spacer for the image which would be 240 x 400.

Does this sound like a familiar problem to any of you?