On 10 Nov 2015, at 02:31, Ken Thomases wrote:
This fixes a problem where child windows ("owned" windows in Windows parlance) would never display their contents on OS X 10.8 or earlier. Beginning with 10.9, Cocoa calls -windowDidChangeOcclusionState: when the window becomes visible, which is why they display on that version and later.
Reported by Huw Davies.
Works great, thanks!
Huw.