Move cursor quickly down the road beyond distance unit can move in one turn, to see where the "1" beads end, to know how far can move.

Click on that location.

As you click, the beads change, to show that as requiring "2" moves. The actual "1" turn is one tile earlier.

Sometimes the change happens before click. Initial path shows "1" extending a certain distance, then it abruptly changes to the correct distance (one tile shorter).

But sometimes I've been able to get it to be stable: can leave the cursor motionless showing "1", then finally click, and it changes to "2".

When this happens is quite annoying, because if don't go back to the unit to cancel the short 2nd move, the unit won't be queued in the next round of moves. Will believe I only wanted it to move that tiny distance next turn.