Not just you....I've had issues where I could not type and not just Spotlight.
I left my Mac in High Sierra last night and first thing this AM, I could not type or select anything. I could select Safari in the Dock, but when the window opened, I could not type or do anything in Safari. Same for all other apps. I tried to unlock System Preferences > Startup Disk and it kept trying to authorize. I eventually had to power down and use Option key to get back into my main drive so I could get some work done.