Board Thread:Plants vs. Zombies 2: It's About Time/@comment-25510054-20150114074130/@comment-24516318-20150117201857

Darumo wrote: Found a new glitch!

In TFT, I was doing a level and I had to save and exit of it. When I came back, the power tiles disappeared! Fortunately, they reappeared in the next level.

I haven't tried it again, so I don't know if it always happens or you just have to save and exit to cause the glitch. Sadly isn't that 'new'. It's been known for a few weeks, I believe.