Your bug report

#66283: 30.0.50; which-function-mode: When configured to display in header, and toggling off, then does not remove header

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 66283@debbugs.gnu.org.

-- 
66283: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=66283
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