Gather:about mount bug

I set up ground mount in the gather fuction . Found  such a problem. When  the character moving on the gather Path,after  found a mineral or herbal , then bot found  a new move path, it automatically dismount ,mount ,then go to the mineral or herbla  . After gather , BOT found path back to the original path,game  characters then mount ,dismount to the path. Most times the game character  mount ,then dismout, mount again. I  already uploaded the LoG. How can I  solve  this problem,Waiting for everyone's  reply.
Sorry for my poor english.

15 三月 2017 11H37.log.html