Since the last patch I've had several summon figurines that now say that they're out of charges. There's never been any indication that they have a fixed number of charges, and there still isn't any indication on the one or two I have that aren't out of charges.

Is this a bug or has it always worked that way and I'm just now running into it? If I knew there were limited charges, I would've been much more careful with using them.

It's been changed couple patches ago, probably to encurage people to engage more with the system. The changed sparked some unhappiness among frequent figurines users.

Yeah this has been a thing for a while now. I found it irritating too because limited resources like this tend to make me want to never use them.