Does this happen with all images? Or with some specific ones?
Otherwise, can you still go to Edit ➤ Preferences ➤ Tool options and Edit ➤ Preferences ➤ Input devices and hit the big Reset saved... options in each?
Otherwise, can you still go to Edit ➤ Preferences ➤ Tool options and Edit ➤ Preferences ➤ Input devices and hit the big Reset saved... options in each?