"Bobbing" effect when zooming with mouse wheel or panning in Firefox 2.0.0.7

[jng]

I just upgraded my version of Firefox to 2.0.0.7 via automatic update and noticed a new weird behaviour with the AJAX viewer.

When zooming in or out with the mouse wheel, the map will stretch or condense as expected and the "loading" bar will display.

When the loading bar disappears, the original view of the map (pre-zoom) will show for a second or two before the new view is shown.

[jng]

I just found out that this effect also happens when panning.

[MaksimS]

AJAX Viewer before user performs mouse-wheel zoom in.

[MaksimS]

AJAX Viewer as user performs mouse-wheel zoom in.

[MaksimS]

I guess "bobbing" here represents a discrepancy between refreshing of dynamic layers over base ones when using mouse-wheel zoom in/out. It also happens with IE 6.x, including other versions of IE. In IE, panning operation performs OK - without "bobbing" effect.

My map has several groups of fully tiled (cached) base layers. It also has few standard (dynamic) layers. When user performs mouse-wheel zoom in/out, base layers disappear while dynamic ones get "zoomed". Looks ugly and confusing at the same time.

IMHO, both dynamic and base layers should follow identical refreshing scheme - they should both either disappear, or "zoom" in/out.

Please see attached images. Parcels (polygons with black edges) belong to dynamic layer. All other polygons below belong to pre-cached base layers.

[jng]

Closing as a) there has been nothing about this for a while b) I would think most users have moved on to Firefox 3.x