The vague trigger reset issue was why I got ride of mine. See post 34. I tended to short stroke it during rapid fire, in the end, it's just something unique to this type of trigger design...a design compromise. Not good or bad, just not for me. The S&W has a pretty stout return spring and a more definite reset, which mitigates the issue.
Like you, what scared me the most is the nature of the malfunction. When it happens there is no indication that the mechanism is not reset, you press the trigger and the cylinder rotates, but the revolver doesn't fire.
That's probably why it happened to me in rapid fire, when I was trying to feel for the trigger reset as quickly as possible. The trigger would return half way, then I would feel the mechanism reset, but it hadn't! There is no warning when this happens, no difference in the trigger feel, you just pull the trigger and it doesn't fire, it just rotates the cylinder.
Here's a youtube video of it happening. (not my video!) See approximately minute 4.
https://www.youtube.com/watch?v=d0ioFQkw-x8
Here's another review where it happens. The reviewer thinks it's bad ammo, but you can tell he didn't let the trigger all the way forward. At about 2:16.
https://www.youtube.com/watch?v=IGKnsMfVSSg