[ScaleManager] TypeError: this.removeFullscreenTarget is not a function

[darklightcode]

Version

• Phaser Version: 3.18.1

• Operating system: Microsoft Windows [Version 10.0.18362.175]

• Browser: Google Chrome 75.0.3770.100 (Official Build) (64-bit)
• Browser: Firefox 67.0.4 (64-bit)

Description

I have tried implementing the fullscreen functionality in my game using this.scale.toggleFullscreen(), and hoped that it will scale my game properly, but instead i got an error in the console TypeError: this.removeFullscreenTarget is not a function.
I have tried the Fullscreen Demo from examples, and the scaling is done properly (but the error is still triggered, perhaps from this.scale.stopFullscreen(); ), so it's safe to assume that my code is wrong, but the removeFullscreenTarget error slipped into 3.18.1 from 3.18.0-beta1.
( I was using this previously because 3.17 was failing on Internet Explorer 11 )

See the error in the image attached.

Example Test Code

let item = this.add
            .image(0, 0, 'background_default')
            .setOrigin(0.12, 0); 

item.setInteractive();
item.on('pointerdown', ()=>{
    if(!this.scale.isFullscreen) {
        this.scale.toggleFullscreen(); // will trigger the error
        // this.scale.startFullscreen(); // this works ok
     }
}, this);

[photonstorm]

Thank you for submitting this issue. We have fixed this and the fix has been pushed to the master branch. It will be part of the next release. If you get time to build and test it for yourself we would appreciate that.