just reporting I had this weird glitch yesterday where I couldn't melee, I had to restart game for it to work again.
Edit: I found out for me it is whenever I die in SP it stops meleing.

I get this glitch all the time.

my favorite glitch is when i jump and sometimes fall through the map

Just signing in to report, I get this glitch ALL THE TIME too. Makes certain areas friggin impossible. I try rebinding to other keys in-game but it doesn't work. 45 minutes later it will randomly start working again. Reeeeeally obnoxious guys.

i had this same issue not but a few minutes ago. I was trying to knife an alien and was constantly hammering the **** button but to no avail.. CRYTEK FIX PLOX?!

yeah, iam playing veteran, and got killed because the meele is not working. had to start over at the checkpoint at the beginning of the level :/

I get the same glitch, but I don't think it's just melee. I had my "1" key stop working, to the point where I started thinking my KB (Das Keyboard Pro) was messed up. Then it started working sometime later.

Also had instances where I can't collect the nanodust no matter what I do.

Occasionally the "F" key for grappling decides not to work, also.

Seriously, devs?