When Mad Scientist Ziggs lays down his minefield, whether or not the mines explode they will appear to remain for the duration of the minefield. When the duration ends the mines will disappear but a sparkly green particle will remain left behind for the duration of the game.

Confirmed happening for everyone on my team in the game.

This is confirmed for me as well, it is a very annoying bug

So much lag down mid lane..

b

Thanks for the report, we've got a fix sorted out for this, will definitely be addressed in the next patch, though we're investigating whether it's possible to get it hotfixed before then as well, given this one's a pretty annoying bug.

Looks pretty cool though I have to admit

Personally I like the sparkles. Really spruces up the lane =]