Operating System: Windows 10
Detailed description: When i entered a zone (can’t remember the name now, but it was a side zone that starts with a wooden bridge) my Mana was visually drained (no blue at all), but the numbers above were correct (full). After moving a couple of steps it suddenly refilled to maximum again.
What were you doing at the time? As described above
How consistently does this happen? Happened once. Tried to reproduce it but no luck.