I've had the same experience with an iclear16 vaping itself empty.
Fortunately it was a dark juice and it showed up on the piece of kitchen towel I use as a vape stand on my desk. It's the only one of the ten iclear16s stood on my vape stand that has leaked like this. I unscrewed everything including the head and screwed it all back together again and seems OK now - I can't remember if I checked the tightness of the coil head when it was new, but it's something I will do in future.