Currently what happens is when you view a sticker pack, and hold click on any of its stickers, it will only preview that sticker (also it takes a lot of time to preview one, might as well reduce it) despite the fact you are holding left mouse button and hovering over other stickers.
Just like in official app, you hold click on one of the sticker in the sticker pack and in like a second, it will preview it and you can hover your mouse over other stickers to preview other stickers too
Edit (better explanation, thanks to Zenexer): If you preview one sticker, then drag your mouse to other stickers, the preview switches to the new sticker over which you’re now hovering. This allows you to preview multiple stickers quickly.
Uhh, should I post this in that issue?
I think that's a duplicate since sticker preview isn't working
Sticker preview does work but its behaviour needs to be changed.

Never had it working in any way
Never had it working in any way
What do you mean? It clearly works
Never had it working in any way
What do you mean? It clearly works
Not here and in the PCs of the people who commented that issue
On at least some official clients, like TDesktop, if you preview one sticker, then drag your mouse or finger to other stickers, the preview switches to the new sticker over which you’re now hovering. This allows you to preview multiple stickers quickly.
I believe that’s the behavior being requested here.
Hmm, I am using a laptop so maybe that's the reason?
No
On at least some official clients, like TDesktop, if you preview one sticker, then drag your mouse or finger to other stickers, the preview switches to the new sticker over which you’re now hovering. This allows you to preview multiple stickers quickly.
I believe that’s the behavior being requested here.
Exactly, I wasn't able to put it in words property
This ticket is requesting a change in behavior to previewing the stickers that have already been added prior to sending one.
Two different interfaces, two different issues. This isn’t a duplicate.
546 is about previewing stickers in a single sticker pack when one sticker is sent by someone else to a chat.
This ticket is requesting a change in behavior to previewing the stickers that have already been added prior to sending one.
Two different interfaces, two different issues. This isn’t a duplicate.
Yes, thanks to your explanation it's clear now
Sorry, my English is poor, it was difficult for me to explain this.
No
Then how is it possible that it's working for me?

You should try holding the sticker for a bit long, it takes longer than the official app to preview the sticker
You should try holding the sticker for a bit long, it takes longer than the official app to preview the sticker
Yep and it doesn't work
Again, you’re both talking about two different interfaces. One has the preview feature, the other probably doesn’t.
I don't think so, having repro steps maybe would help me to understand that better
I don't think so, having repro steps maybe would help me to understand that better
Should I record my screen and send it to show what am I talking about?
I know what is sticker preview from a pack, but cannot understand from where you're loading the pack,

By clicking on one of the stickers in the chat to open the pack
@Zenexer not working from there 🤷♂️
No idea, then. Regardless, that’s a different issue, #546. This issue is about an enhancement to the existing functionality.
No doubt about that
Do you need logs, because I am able to preview every sticker?
Not needed, thanks