Rendering errors are displayed inline, making them unreadable

How to reproduce:
1. Use the following content to generate a rendering error:

foo{{html}}
<div>thou shall fail!</div>
{{/html}}bar

2. Click on the error to expand it and see the details
3. Good luck!

Using a "display: inline" on class "xwikirenderingerrordescription" seems to make it look nice, but maybe some other details need to be considered that I am not aware of.