It’s hard to be perfectly sure since I don’t recall exactly what all I had before opening it, but I just spent 1k event tickets on a loot box and don’t think I got anything. I opened one yesterday and got a Bloodmoon Moss Flytraps so I know they work in general.
I tend to buy things in even amounts and don’t recall doing otherwise last year, so it makes sense for me to have 2 each of the bloodmoon set with 3 flytraps due to the previous lootbox. I also have no vulkiras in my inventory and still just have 1 each of the sludgemanders.
When I opened the lootbox the screen seemed to briefly freeze and reloaded without showing any reward but still counted my tickets as spent. Not sure what happened here!