how do I do that?
this has happened on Oxygen OS and Oxygen OS Beta.
both softwares it has happened on.
go to settings ,apps ,...
It only works in the oneplus laucher if you have turned on double tap to sleep option in laucher settings
OK , head over to settings , find accesibility and turn it off
Open beta with android pie has been released for OP6 , it will soon become stable and then they will release it for 5 and 5t