There's a pretty nasty bug to be found in newly released expansion The Witcher 3: Wild Hunt - Blood and Wine. When we encountered it, we were hoping that it was merely an isolated incident, but after trying just about everything - reloading our save, changing the time of day in-game, etc. - we can't seem to make it go away. And unfortunately, it sounds like we're not the only ones to have discovered this annoyance.
Indeed, a quick Google search reveals that quite a few players are having the same problem. Without spoiling anything, the bug occurs during the secondary quest "Warble of a Smitten Knight". During this quest, Geralt can participate in some basic training exercises, and one of them involves riding his horse, Roach.
However, once a cutscene plays out and you regain control of Geralt, who is now atop Roach, there's a chance that you won't be able to move. You can't gallop, you can't get off, and you can't complete this portion of the quest. The only thing that you actually can do is open the main menu and reload a previous save that brings you back to a point before you began this part of the quest - that's your only option if you're unlucky enough stumble across this bug.
Fortunately, there is a way to get around the bug, but it's not really ideal as it involves skipping this bit of the quest. The aforementioned training exercises can be skipped entirely through a dialogue choice with the quest giver - but be warned: you can only opt out of the horse riding exercise before telling the quest giver that you'll do it. The good news, however, is that skipping training doesn't have an impact on how the rest of the quest plays out, so you don't have to worry about missing anything too important.
Have you encountered this quest-breaking bug? Stay safe and avoid training in the comments section below.