As prompted by https://stackoverflow.com/questions/62764699/can-leaflet-jump-to-new-world-copy-on-zoom-instead-of-just-on-panning .

I have tested it with mouse only - at the moment I do lack a tablet (or any other big multipointer input device). I would appreciate a bit of manual testing of this:

• Check out the branch
• Do the build (npm run rollup)
• Manually open `debug/tests/draggin

MGLTilePyramidOfflineRegion should have a countOfTiles method that returns the number of tiles included in the tile pyramid. The implementation would rely on the mbgl::util::tileCount() function added in #9906.

This is the iOS/macOS equivalent to #11108 for Android. It would serve as a built-in alternative to mapbox/turf-swift#47 for applications already using the map SDK, including applica

maptalks's version and what browser you use?
v0.43.0, chrome

Issue description
Layers do not share WebGL context, which creates glitches when a map has more than one 3d layer. For example a buildings layer with a 3D line will not hide the line behind the buildings.
In particular, I am implementing a 3D terrain layer but this layer will not hide (behind mountains) any other 3d element

What's your browser and operating system? (Copy/paste the output of https://www.whatismybrowser.com/)

Firefox

What is the problem?

There does not seem to be a way to get the z-coordinate of a point in orthophoto.

What should be the expected behavior?

The measure

'react-autocomplete' (https://github.com/reactjs/react-autocomplete) is no longer maintained and causing warnings

react-dom.development.js:12357 Warning: componentWillMount has been renamed, and is not recommended for use. See https://fb.me/react-unsafe-component-lifecycles for details.

• Move code with side effects to componentDidMount, and set initial state in the constructor.
• R