bug#23925: 25.0.95; display broken when maximizing frame

[martin rudalics <rudalics@gmx.at>]

 > In a non-cairo build, I get:
 >
 > ((outer-position 0 . 0) (outer-size 1920 . 1055) (external-border-size 0 . 1) (title-bar-size 0 . 23) (menu-bar-external . t) (menu-bar-size 1920 . 22) (tool-bar-external . t) (tool-bar-position . top) (tool-bar-size 1920 . 44) (internal-border-width . 0))
 >
 > frame pixel: 1920 x 964   cols/lines: 240 x 56   units: 8 x 17
 > frame text pixel: 1891 x 964   cols/lines: 236 x 56
 > tool: 0  scroll: 13/0  fringe: 16  border: 0  right: 0  bottom: 0
 >
 > #<window 3 on *scratch*>   parent: nil
 > pixel left: 0   top: 0   size: 1920 x 930   new: 947
 > char left: 0   top: 0   size: 240 x 54   new: 54
 > normal: 1.0 x 1.0   new: nil
 > body pixel: 1891 x 913   char: 236 x 53
 > width left fringe: 8  left margin: 0  right margin: 0
 > width right fringe: 8  scroll-bar: 13  divider: 0
 > height header-line: 0  mode-line: 17  divider: 0
 >
 > #<window 4 on  *Minibuf-0*>   parent: nil
 > pixel left: 0   top: 930   size: 1920 x 34   new: 0
 > char left: 0   top: 54   size: 240 x 2   new: 1
 > normal: 1.0 x 1.0   new: 0
 > body pixel: 1891 x 34   char: 236 x 2
 > width left fringe: 8  left margin: 0  right margin: 0
 > width right fringe: 8  scroll-bar: 13  divider: 0
 > height header-line: 0  mode-line: 0  divider: 0

Is it on purpose that you used a tool bar, a menu bar, scroll bars and a
different font height in the non-cairo build?  This way the results are
not easily comparable.

Anyway, I meanwhile built with cairo myself.  The GTK build exhibits
more or less the original problem - though sometimes the frame seems to
maximize correctly.  In addition, scroll bar sliders may disappear at
will and resizing the echo area doesn't behave well either.

A Lucid build shows similar symptoms - its scroll bars behave better,
though.

martin