Fast Sneak Does Double Sneak REPORT - NOT COPY!

When I click on the sneak button VERY FAST it gets GLITCHY i realy wanted to report this before but never mind... please read and fix this.

From me (ign), parpar8090

NOTICE: it's not a copy of MC-149704 you may read it wrong

NOTICE 2: it's not happening when "Sneaking / crouching twice makes player sprint" as it sayed in MC-149704

See the video below :