Reflection sphere & box not working

I noticed that reflection sphere & box not doing any effect at all since 4.12.4
not sure if i missed up something or not…
only reflections caused by skylight being effective and using planar works as well
but relfection sphere works fine in a project i made back in 4.11 and converted it to 4.12.2 ( last time i check it was fine) and today with 4.12.5 that project is working fine
… tried with blank new project with 4.12.5 reflection sphere isn’t working … and everything appear dark in reflection view mode. unless iam using skylight.

Thanks for the help