> We can shorten the flash period by responding to the first WM_ERASEBKGND > message (the fix for JDK-8088179). We don’t want to respond to further calls > to WM_ERASEBKGND since that causes flickering during resize (JDK-8171852). > Michael, I think you implemented something along these lines in your PR to > better sync the windows’ background color with the scene’s fill color.
You're right, almost forgot about that PR. I've tested an isolated patch, and I can't see a white flash with it: https://github.com/openjdk/jfx/pull/2316
