I just opened a hextech chest, with a key, and only got a key back from it???

See title. Is that supposed to be able to happen or is it a glitch? Posted this on reddit too but was hoping to get an official response here about it.

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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