[BUG] Cannot add more than 4 stickers pack

[blue-baloon]

Hello everyone!

I'm using ShareX 16.0.1 portable and i wanted to add some stickers.

I downloaded the whole openmoji 72x72 pack, added the folder in ShareX Stickers without problems, but when I was testing it, after applying the sticker ShareX became very laggy loading the stickers window (sticker selector), I thought it was because the pack contains lots and lots of images [I was right, after spreading the images into more folders, the lag was solved].

So, to decrease the 'processor demand' I divided the openmoji pack into 4 folders, and tried to add them to ShareX stickers, but cannot add more than 4 folders.

I tried several times, no success... So I'm here reporting this very small issue, hope it can be fixed easily.

Sorry about my English, hope you can understand what i meant to!