I've had this issue for a while, persistent through uninstall/reinstalls, power cycles, etc. I'm on a OnePlus Open running Android 16, and the app version appears to be 1.0.41.
In the Android Kagi search app, every time I open it and run a search, it just returns a blank black page. It's not loading or anything, it will just sit there blank for minutes. Upon closing the app and opening it again, the search will run correctly. This is happening every single time - the first search won't work but the second instance will. If I leave the app running in the background, it seems that it will continue to work across new searches, this is only happening when the app is started, and again, only that first time.
I would expect the app to perform as expected each time it's opened.