If you disable "Support PointLight WholeSceneShadows" spotlights stop casting shadows. This is working as expected in 4.20 CL# 4369336.
Found in 4.21 CL# 4753647 and 4.22 CL# 4809892
This is a regression.
No shadows will be produced from the cube
A shadow would be cast
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-69344 in the post.