Run without holding down Shift

[taco bell manager]

So after holding down shift for a couple of seconds you're able to run without holding it. This doesnt work for me anymore since i have reinstalled the game recently. Very annoying. Also wierd cause sometimes it actually works and then it does not..
Anyone got a solution ?
Im not talkting about auto run.

[reek]

change to "always run" in rust setting. then just use W key to run and shift + W to walk.