map.loaded() returns "false" when setFilter() is used on a layer with missing tiles within the viewport

[lobenichou]

When using custom vector tiles, empty tiles will return a 404, which is expected behavior. However, if a we have missing tiles within the viewport and we use setFilter() on click on a layer using the missing tiles, map.loaded() will continuously return false.

mapbox-gl-js version: 0.49

browser: Chrome, FireFox, Safari

Steps to Trigger Behavior

1. Create custom vector tiles
2. Add a layer to filter and a layer to set the on click event on.
3. Add an on click event to the layer
   4 . Add a setFiler() on click
4. Set an interval logging map.loaded()

Link to Demonstration

Here is a jsFiddle: https://jsfiddle.net/f27j8rqs/

Expected Behavior

map.loaded() should return true.

Actual Behavior

map.loaded() returns false.