Currently experiencing a recurring bug. Running out of stamina causes character to go into negative stamina. Once the stamina score goes negative, it is impossible to do any action requiring stamina (attack, jump, climb, etc.).
In addition, intermittently suffering loss of ability to regain stamina. Character’s stamina remains stuck at reduced level and never rises.
When one of these conditions strikes, the only way to remove it is to die, which is a highly problematic solution.