Your bug report

#12131: 24.1; First lines of buffer disappear when changing fonts or setting frame width in Emacs 24 on Mac OS

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 12131@debbugs.gnu.org.

-- 
12131: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=12131
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