Player continues to move after release "W" key if hold down for awhile.

dear mojang ,

i am posting this regarding annoying bug in minecraft with "W" key  that is key which is pressed to spring in front 

 

the issue goes like while pression w for long (say 5 to 10 sec) and after realising it charactors keeps moving.

after opening chest inventpory etc... and starting moving away after closing inventory or chest w key strucks and dosent works for 3 to 5 seconds !!!

please note that i didnt face any such issue with any other vider game except minecraft , so probably there must no issue with keyboard 

please make concern regarding this issue 

thanks