Screen stops attached process in copy mode

[Rogers Colin M]

I'm running a program in that produces significant amounts of terminal output. I start this program in a detached screen, and at some point later attach it. This presents me with a view of the output from the program, which is fine.

 

However, if I then enter copy mode, a short while later the program stops execution, and only resumes when I leave copy mode. This is very irritating as the program is time dependent, and so stopping it running causes problems.

 

I can't find anything about this in the manual, so can anyone tell me if this is the intended behaviour, and whether I can get around it in anyway (i.e. allow the program to keep outputting to the "terminal" when in copy mode?)

 

TIA

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