This issue may have altered my base move speed, and does effect different worlds, I stopped taking damaged from the sweet berry bushes when walking through them. My characters on all profiles have been affected. I take two normal steps then all additional steps are small slow steps. This continues until i change direction then it is 2 normal steps then small slow steps for the remainder. Sprinting is unaffected and i have gotten to the normal walking speed after transitioning from sprinting to walking while holding still holding the move forward button, but i lose the normal speed if i let go of the forward button. The issue some times returns after changing directions. The slow movement is about 1/3 to 1/4 of the normal walking speed so it is pretty game breaking. i tried it in creative mode and the issue presents itself even while floating as well.