Juni, I think that your idea is not crazy at all.
Philplessis, everything is just like you wrote. I had that type of WW, one was blinking, other wasn't but did have hands above it.
So, when I reloaded game, my both WW started working normally, and both had helping hands and tooltip (which were working ok) showed remaining time for NH. When NH wore off from my first WW it just continued to work normally. But second WW was behaving strangely:
Every time when i would put pointer on it, tooltip would show me less time then it should. For example, i put pointer, tooltip says 36:50m, i remove pointer and position it back on WW. I need 1s to do that, but tooltip says that i have 36:44m, so i remove pointer and again put it back on WW, now I have 36:38, and so on. So, it was like timer was counting down remaining time faster than it should. And when remaining time got to 0 WW started to blink. I reloaded game. And WW again had helping hands above it, and tooltip showed remaining time, about 30 min. Then i was playing with it again, with pointer. So, remaining time got to 0 again, WW started to blink. I reload again, and it was the same, but remaining time was around 15 min. I repeated again, and got around 6 min. this time when it got to 0 WW started blinking but after reload everything was fine.