Q:

Keyboard shortcuts (spacebar) no longer works in Photos on Mojave

Until recently, pressing spacebar toggled expanding my photos in Photos, and single keys provided a way to edit photos (e.g. C for crop). None of these features now work for me.
How do I restore keyboard shortcuts in Photos?

A:

This is fixed in macOS 10.14.4 (Photo 4.0): spacebar now opens images and keyboard shortcuts work for editing.

