Default [Q] Help! KFJW 's problem-long pressing the Back makes it inactive

Awesome man(@Hashcode), come and give me a favor! I have got a Kindle Fire HD 8.9 without LTE. I use ROM-ASOP by Hashcode all the time, but there is always a bug that long time pressing the Back button makes the button inactive. Is there anyone that meet the same or similar problem? I pray for you help!