Show Window button breaks when hidden by Janitor's Closet

[lpgagnon]

If the stock button is hidden via Janitor's Closet's "Hide here" feature, clicking the button inside the JC flyout does nothing instead of hiding/showing the planner window.

Worse, this somehow also breaks a button added to Blizzy's toolbar. Having to keep the appbar button unhidden in order to use the Toolbar button mostly defeats the purpose of having blizzy support.

(ideally there'd be a non-JC way to hide the appbar button; possibly easier than fixing whatever this is)