Regarding https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42676 https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42677 etc. Well if this is an libx11-6 bug, then patching just emacs won't fix the (many more?) other packages this affects...
>>>>> "c" == cufalo <cuf...@gmail.com> writes: c> Reported also for libx11-6 at c> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=966691 c> Anyway, thank you so much!