Tools grow when summoning a mount.

I'm not sure if this is tied to specific weapons, but basically when summoning any of my mounts my tools grow to an abnormally large size.

This is a screenshot of my mining pick when I'm idle.

http://i.imgur.com/BEQwCW0.png

And this is a screenshot of the same mining pick while summoning my mount.

http://i.imgur.com/WGvSBgn.png

The same thing occured when I was wielding blacksmith and armorer weapons as well.

Thank you for posting your concerns about your mysteriously growing tools. I have made sure to submit all of your information to the development team, and they will thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread, but I do recommend checking Here or Here for any details regarding the development team's investigation. Thanks again for your report!