Dezyne 2.15.3 does not fill out param with "<-" argument operator

When using the following construct:

on api.Test(arg <- temp): (2.15.3) (was blocking on api.Test(arg <- temp): in Dezyne 2.14).

In the generated code, when the call event will return to the caller, temp is not copied to the arg out parameter.

Ok:

NOT Ok:

See also the attached zip with an undressed example and the generated code (2.14.0 + 2.15.3) missing-out-param-copying.zip