Hi @spean ,
oh no, that shouldn't be happening! Is this the only app not responding? If this is the case, could you please check if there are any updates for this on the Google Play Store> Manage my apps and devices> Facebook> Update.
If there aren't any available updates clear the app cache and data from the phone Settings> Apps> Facebook> Clear cache and then clear data.
I see! Have you checked if the same thing happens when the phone is running in Safe Mode? Safe mode lets you run your Android device using its basic interface, with simplified menus and without most third-party applications. You can think of it as a diagnostic tool to help identify and fix problems on your device. Find how to place your phone on this mode here: https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/