I need to press a key 1 or 2 or 3 times to active a skill

[khanhforjob]

skill 1234

 

[Myling]

Is this for a specific hero/ability and have you changed your key binds at all?

 

[khanhforjob]

I did not change any key bind. The hero who has these problem are Viscous, Mcgrinni,