Found it, in addition to the “Project Settings” check-box I also needed to tick the collapsed-by-default (facepalm) “Force No-Precomputed Lighting” checkbox in “World Settings”…
Found it, in addition to the “Project Settings” check-box I also needed to tick the collapsed-by-default (facepalm) “Force No-Precomputed Lighting” checkbox in “World Settings”…