- Issue : When starting the application with the compare slider active, sometimes the rendering event would not be instantiated, meaning the compare slider would not work.
- Reason: When instantiating the compare slider, we used to add a once trigger on precompose if there were no layers ready on the map, but there were layers in the store. precompose is only fired with vector layers (webGL context). This means that, in this case where we had WMS layers which used the canvas context, the event was never fired.
- Fix: We use a rendercomplete event instead and ask for a new render.