Parsoid/Known differences with Core Parser output

This page tracks known HTML output differences between Parsoid and PHP Parser and what the proposed solution is to resolve that difference. For a more user-oriented version see Parsoid/Parser Unification/Known Issues.

Differences identified via visual diff testing
We run mass visual diff tests comparing rendering of Parsoid output and PHP parser output. This table will be filled out as we inspect the visual diffs and identify the underlying cause for those diffs. In addition to the above source of diffs, here are a few more specific ones that we discovered.