Roblox Core Playerlist

A game called “Rat Wash” has achieved editing roblox core playerlist by making it only show 3 Containers before breaking off into a scroll. I can’t edit the offsetSize since playerlist by default is within CoreGui and this playerlist seems like its the actual roblox one since it follows all functionality of the norm. How did they achieve doing this?
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Window Resize
In the new version of the PlayerList, we automatically resize the leaderboard’s max size based on the size of the window that the game is running in. This means if you resize the window the playerlist height will adjust to be no more than 50% of the window height.

(Taken from another topic)

It depends on how small the screen is

i could be wrong

Screen size is not the cause for this as I’m on a 27 Inch wide Monitor, I also was on a laptop before. Regardless of your Desktop device it always stays this small, I’m assuming theirs some sort of editable module somewhere or variable where I can alter its max size which is what I’m looking for.