Your bug report

#40930: 2019-05-21; Font locking slow and unreliable

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

The explanation is attached below, along with your original report.
If you require more details, please reply to 36075@debbugs.gnu.org.

-- 
40930: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=40930
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems