Question to theme experts

[AC Question]

I don't like launchers so i use an icon changer app to change my icons, i have a few that i bought for my previous jailbroken iPhone, now i'm using a Samsung A8 i changed all my icons but there's something weird happening when i tap on the icon to launch the app the icon sinks downwards, i vividly remember this happening on jailbroken iOS and i got it fixed now that it's happening on Android too i have no idea how to fix it or what to look for. If i skin or change the icons using a launcher the issue doesn't happen. My icons are in correct format .png and in HQ quality for retina devices. Any ideas? Thanks in advance.