Debugging Walk-Thrus is possible by using the WalkMe Flow Tracker Tool. This tool can be accessed by calling the WalkMeAPI.launchTracker() in any browser console.

WalkMeAPI Functions
WalkMeAPI.launchTracker() Displays a moveable element that displays information regarding the current Walk-Thru.
// Call this API in the browser console
WalkMeAPI.launchTracker();