That is intentional. 0-tick was too OP and it was a bug.
I just reported the same issue and then found this one :/ I hope it gets fixed
I am using silentwisperers design (the second one on this video) and the problem above is occurring https://www.youtube.com/watch?v=UA5qLp4ZMY8 this was working in 1.14 update
The little crosshair selector thing is gone too.