Regression with gnu screen: Scrollbar gone between 4.02 and 4.03

[ht@inf.ed.ac.uk (Henry S. Thompson)]

To reproduce:
  1) Update screen package to current (4.03) version;
  2) Run screen inside mintty;
  3) Generate enough text to fill the screen and start scrolling
  4) Click in the scrollbar, or use the mousewheel
Desired effect
  Scrolling
Observed effect
  Nothing, wrt scrollbar; history review, wrt mousewheel

Reverting to 4.02 fixes the problem.

Expermentation suggests this does _not_ arise because of the small
change in the default screenrc between 4.02 and 4.03, as just
reverting that change does not solve the problem, and reverting to the
4.02 .exe _does_ solve the problem regardless of which screenrc is
used.

mintty version 2.1.5, Cygwin1.dll 2.2.1, 64-bit

ht
-- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
                       URL: http://www.ltg.ed.ac.uk/~ht/
 [mail from me _always_ has a .sig like this -- mail without it is forged spam]

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