Every time I leave an area and come back, a majority of my minecarts have just stopped moving (such as hopper minecarts used in creeper farms or various other farms).

I always assumed the minecart would just store it's velocity and direction when unloaded so that it can continue moving when the chunks is loaded once more, but apparently not.

I've been looking through reports of other people having the same problem but they all seem to be resolved, although clearly the problem is still an issue.