Download speed and progress indicator

[RS]

Does Perl distinguish between desktop and laptop machines?

If I run get_iplayer with --verbose I can get an instantaneous download 
speed indicator similar to the one we used to have.

If I run it on my desktop machine it displays a single line which is 
continuously updated, like the indicator we used to have by default.  If I 
run it on any of my laptops each update is on a new line.  I presume that in 
the first case the line is terminated with a CR and in the other cases with 
a CR LF.

The relevant code seems to be between lines 7206 and 7224.  It calls 
main::logger with a string formatted by sprintf.  If I don't set --verbose, 
so the else code is executed, all machines display a single continuously 
updated line.  In both cases the line appears from the code to end with CR 
LF unless {crlf} doesn't mean what it appears to.

All machines are running the version of Perl dated 15 Jan 2017.  They are 
all running various versions of 64-bit Windows 10, Home and Professional, 
1709, 1703 and 1607.

Any ideas on what is causing the different behaviour?