In animation blueprint editor, in bottom left corner, in “editor preview” window there’s a dropbox called “root motion mode”. Try setting it to “Ignore root motion”. That will disable ALL root motion, though. Alternatively you could use “root motion from montages only”.
See screenshots here:
To check if root motion is enabled, you need to check individual clips you’re using. Double click on each. If character walks in place, then either there is no root motion in the clip, or it is enabled.