User location dot dances around during zooming

[friedbunny]

With the merge of perspective (#2116) the user dot jitters around during zooming — especially at higher zoom levels. Likely not confined to iOS, but we haven't tested this on Android.

@ansis is working on a fix in perspective-improved-gestures.

From #2207 (comment):

/cc @incanus @1ec5 @brunoabinader

[incanus]

Per @1ec5, seems to be a regression from 51c9386.

/cc @ansis

[incanus]

Likely not confined to iOS, but we haven't tested this on Android.

We don't sync any views on Android right now, but do on iOS every frame draw.

[1ec5]

@incanus, @ansis has a fix in 3f79c39.

[incanus]

Ah, thanks for closing the loop @1ec5. Sounding good.

[1ec5]

3f79c39 helps, but it doesn’t quite fix the issue. I still see the user dot jiggle while zooming in or out with two-finger tap and slightly while panning around at the lowest zoom levels.

[1ec5]

ref #1827