I already updated to the newest bug fix update. (0.12.2.0)

Whenever I reopen a world I found that my tamed wolves are stuck in a sitting position. I have tried right clicking them with an item in my hand, no item in my hand, punching them, reopening Minecraft Windows 10 Edition, and reopening my world, however with no luck. My wolves were never in a sitting position when I closed my world, additionally it does not seem to affect tamed wolves in unloaded chunks. This has happened twice now at two different times.

Edit: Recorded a video, here's the link: https://youtu.be/O9q4GNzxbUk