reStructuredText Error (BB-12551)

The big red border makes other text unreadable:

This is how it looks like in PyPI, and how it actually should look like (other texts are covered due to privacy purposes):

This is the editor:

This error occurs both on wiki and README with rst format.

Also do note that there are only two "AssertionError" in the editor, but rendered version contains three "AssertionError". The last block is duplicated.