Magic keyboard

Hey there lee_tl,

Thank you for using the Apple Support Communities! We understand when using FaceBook on your iPad, your Magic Keyboard becomes unresponsive and/or can't click on items. Let's see how we can help.

Since the issue sounds to be isolated to the FaceBook app, we would recommend checking for an update to that app: How to manually update apps on your Apple device

Otherwise, we also suggest these steps: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open

Best regards.

go to accessibility settings and turn ON full keyboard access. go further in and also disable the special function given to Space Bar.