units anomily

[roadrunner]

Version 10077, emulator

In CAS:

5_(°F)▶_(Rankine)
returns "Some units could not be converted to MKSA Error: Bad Argument Value"

convert(5_(°F),1_(Rankine))
returns "Some units could not be converted to MKSA Error: Bad Argument Value"

While in home:

5_(°F)▶_(Rankine)
returns 464.67_(Rankine) OK

5_(°F)+5_(°F)
returns Error: Invalid input

CAS.(5_(°F)+5_(°F))
returns (10_(°F)) OK

It appears some unit operations are allowed only in CAS while other unit operations are allowed only in Home.