Server lag bug let me buy more than five Reversasigne?

Last night server lag happened while I tried to refill the Reversasigne from the item shop. The dialog gives me no response, so I clicked on the purchase button multiple times to see if it could work again. And what's happening is that I found 35 Reversasigne added to my inventory after the lag is ended!

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Today I tried to purchase some Reversasigne to see if the game will fix the number, but it turned out the limit is broken, and I can buy as many Reversasigne as possible from the shop???!

Screenshot 2021-07-12 221818.jpg

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The number is restored to 5 after I used one of them. I have fired a bug report anyway...

In a similar vein, I purchased all 5 of the event 20 SG tickets last week--the correct amount of points were deducted, but only one ticket was deposited into my inventory. Bug report also filed...

@PrsnOfDsntrst If I recall correctly, it just gives you the SG. It doesn't give you tickets. So you must have gotten that ticket from somewhere else.