Hello.

I was farming castle war tickets for like 4-5 hours yesterday and had 250 at the end. Bought 5 smithing gloves and today used 2 of them totally (all 750 uses). I was smithing last bars and was using my 3-d gloves. Then i got all my rune bars smithed up i had 171 uses left on my gloves, and had 2 new gloves in my bank (750 uses). Then i banked used gloves in to the bank and all my gloves became 171 uses! So i just lost 2 new gloves.... I don't know if that bug was before the new 2 updates. that came today, but it is now and its ruined all my plans ....
I hope you will fix it as soon as you can, because it's quite unfair 

When you've used up the 171 charges on one pair of the gloved the other ones get 750. Nothing to worry about.

You don't have less charges. Your gloves are all equal, all of them having 171 charges at the moment. Once one pair destroys (0 charges) the next pair you use has 750 charges.