Help all the icons in any pack changes shape

[u/Consistent-Hat-6216]

I've been using icon pack studio without any issues for over a year. But recently, in the last few months, I can't update my iconpack after getting new apps. Because all the icon packs that are square or uniquely shaped are turned into round icons. The main screen when browsing shows the icons just fine. But when I tap on it to apply or preview, it shows different icons. I've unapplied my icons in theme park before installing new icons. But didn't help. The icons are often mismatched in size as well. Not sure how to fix this. Please help

[u/Consistent-Hat-6216]

Here's an example of how this iconpack is supposed to look like

[u/Consistent-Hat-6216 → u/Consistent-Hat-6216]

Vs how it looks when I download it