Situation: imp gems on the board do not explode when clicked. Clicking on the imp gems shows purple gems, as shown in the picture below. Notice that in this picture, all purple gems on the board are matched so clicking on the purple gems does not show any info.
Creating sequence: I have reproduced this situation many times. Most of the involves some combination of click on purple gems → cast ultimate and other spells quickly before the purple gem info disappears. I cannot trigger this stably. It may have something to do with timing.
In fact, I believe that I have the same problem very frequently in the time mode, but most of the happen after I make matches (and timer started running), so I never had enough time to make sure that it is a bug.
In my second screenshot, I selected a Death Gem, but the description shows a skull. They cannot be smashed until the next turn. Selecting them multiple times just triggers the description multiple times, as shown in rob’s video for treasure gems. Casting spells does not help.
I noticed this happening with my necro and my merc. At first I thought it was happening if I made a match before activating the gem. But I’ve tested that out and if I make a gem match first, sometimes the ultimate gem works, sometimes it doesn’t. Then I thought it was a combo of matching and casting a spell before activating the gem, that was triggering it. Nope. Hit and miss there, too.
One thing I did notice when doing a bunch of battles in a row… About 10% of the time I have been able to get the gem to activate by clicking it several times, making another move, then clicking the gem again. And yes, that is exactly as ridiculous as it sounds. haha I think it probably is more about the making another move than the extra clicks. But who knows, at this point.