When packaging a project for Windows, Child Widget Blueprints do not inherit bindings.
Tested in 4.20.3 (CL - 4369336), 4.21.1 (CL - 4567586), 4.22 (CL - 4572453)
Expected: The text from the Child Widget Blueprint would tell the current time
Result: The Child Widget Blueprint does not inherit the Parent Widget Blueprint's bindings
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-66681 in the post.