This started the other day but I am unsure if it was before or after I applied the Safari update.
I am a huge keyboard user and always use Spotlight to open files and apps. I hit Command-space and start typing.
Now it’s timing out where I can maybe get a couple of letters typed and the entire box disappears.
I checked the shortcut preferences and there was a conflict with another short cut. I reset defaults, closed, checked it again and no more conflicts. Yet it still won’t let me finish typing enough to get what I’m looking for.
Any other ideas? I didn’t realize how dependent I was on it till it broke. 
Diane
2015 Retina MBP
Sierra