I use the brick app: https://getbrick.app/, and it works pretty well, but they have this weird bug where selecting certain apps on a block list crashes the app. They have a pop-up indicating that it's some apple-related bug, which I find kind of hard to believe. Is this something that also happens in your app?
It doesn't happen to every search. For me personally, if I try to search for apps starting with "r", it tends to crash. Not sure if it's related to the number of applications it needs to search for that match the prefix (for this case I was trying to block reddit).