On entering emacs lisp source block, text at top of org file is underlined in yellow/red by flycheck

[thor314]

A sample of a org file that configures my text:

Markdown
#+begin_src emacs-lisp
(add-hook 'markdown-mode-hook
...

On entering the source block, Markdown is underlined in yellow by flycheck, indicating the polymode tools are escaping the source block somehow. The # character in begin source block is underlined in red. Tools like flycheck-next-error jump to the underlined text.

[vspinu]

Flycheck and related tools that assume homogenuous buffers unfortunately break in multibuffer contexts.