Question to Windows ST3 users: wired behavior with stdout

[ParticlePeter via Digitalmars-d-ide]

Hi, I hope this is not too off topic.
Anyway, running a dub project from ST3 does print some dub 
statistics to the output window followed by 'Running 
.\some_project.exe'.
Issue is, write(f)ln is only sometimes printed afterwards at 
runtime (e.g. when used over and over in some loop) and sometimes 
only after some_project.exe is terminated (e.g. in class 
constructors).
In contrast, starting the compiled .exe from an explorer does 
open a console and print all write(f)ln at runtime as expected.

Is this a known issue or am I the only one with this problem? Can 
this behavior be fixed to print always at runtime?

Cheers, ParticlePeter