[Webkit-unassigned] [Bug 205651] REGRESSION(r253360): [GTK] Page becomes blank during the back/forward gesture animation if loading triggers PSON

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205651

--- Comment #3 from Alexander Mikhaylenko <alexm at gnome.org> ---
Not really, this is only about the gesture. During the gesture we show the current page (as it is) sliding away or being there while another sheet slides over it, and that other sheet is a static screenshot.

After the gesture is done, the actual page is completely invisible, and we show the screenshot only and wait until the new page has loaded enough. After it's enough, we remove the screenshot and it's done.

Previously we started loading new page only after the gesture is done, i.e. the drawing area is invisible. Now it starts earlier, hence you can see the new page starting loading while it still shouldn't.

There are some calls to prevent this on Apple side, we just need to implement them for CoordinatedDrawingArea really.

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