* The Scale Manager has a new scale mode called `EXPAND`. This is inspired by the Expand mode in Godot: "Keep aspect ratio when stretching the screen, but keep neither the base width nor height. Depending on the screen aspect ratio, the viewport will either be larger in the horizontal direction (if the screen is wider than the base size) or in the vertical direction (if the screen is taller than the original size)" (thanks @rexrainbow)
* Phaser now performs a [WebGL Context Restore](WebGLContextRestore.md) to keep the game running after losing WebGL context. This affects many parts of the rendering system, but everything should work just the same unless you're doing something very technical. See the link for more details.
* The `TweenChainBuilder` was incorrectly setting the `persist` flag on the Chain to `true`, which goes against what the documentation says. It now correctly sets it to `false`. This means if you previously had a Tween Chain that was persisting, it will no longer do so, so add the property to regain the feature.
*`Container.onChildDestroyed` is a new internal method used to destroy Container children. Previously, if you destroyed a Game Object in an exclusive Container, the game object would (momentarily) move onto the Scene display list and emit an ADDED_TO_SCENE event. Also, if you added a Sprite to a non-exclusive Container and stopped the Scene, you would get a TypeError (evaluating 'this.anims.destroy'). This happened because the fromChild argument in the DESTROY event was misinterpreted as destroyChild in the Container's remove(), and the Container was calling the Sprite's destroy() again. (thanks @samme)
* The `Text` and `TileSprite` Game Objects now place their textures into the global `TextureManager` and a `_textureKey` private string property has been added which contains a UUID to reference that texture.
*`Tilemaps.Components.WeightedRandomize` now uses the Phaser `Math.RND.frac` method with a seed instead of the `Math.Random` static method. (thanks @jorbascrumps)
*`Tilemaps.Components.IsometricCullTiles` does the `CheckIsoBounds` method check last when building the outputArray, as to help optimize in situations where the tile would not be visible anyways. (thanks @zegenie)
*`Tilemaps.Components.WeightedRandomize` now uses the Phaser `Math.RND.frac` method with a seed instead the `Math.Random` static method. (thanks @jorbascrumps)
* The `Layer.removeAll`, `remove` and `add` methods have been removed. These methods are all still available via the `List` class that Layer inherits, but the `destroyChild` parameters are no longer available.
* The `Renderer.Canvas` and `Renderer.WebGL` will now only be included in the build file if the corresponding feature flags `CANVAS_RENDERER` and/or `WEBGL_RENDERER` are set to `true`. For Canvas only builds this saves a lot of space in the build (thanks @samme)
* You can now specify an `autoResize` boolean in the `RenderTargetConfig` which is passed to the Render Targets when they are created by a pipeline.
* The `UtilityPipeline` now sets `autoResize` to `true` in its Render Target Config, so that the global `fullFrame` and `halfFrame` Render Targets will automatically resize if the renderer changes.
*`Actions.PlaceOnLine` now has an added `ease` parameter which accepts a string from the EaseMap or a custom ease function to allow for different distrubutions along a line. (thanks @sB3p)
* The `InputManager.onTouchMove` function has been fixed so it now correctly handles touch events on pages that have scrolled horizontally or vertically and shifted the viewport. Fix #6489 (thanks @somechris@hyewonjo)
* The `Time.Timeline` class didn't show as extending the Event Emitter, or have `config` as an optional argument in the docs / TS defs. Fix #6673 (thanks @ghclark2)
*`Animations.AnimationFrame#duration` is now the complete duration of the frame. Before this included `Animations.AnimationState#msPerFrame` with the value of `Animations.AnimationFrame#duration`. The fix to remove `Animations.AnimationState#msPerFrame` from `Animations.AnimationFrame#duration` has been removed from `Animations.AnimationManager#createFromAseprite` because of this clarification. Fix #6712 (thanks @Nerodon@TomMalitz)
* When a `Layer` Game Object is destroyed, i.e. from changing or restarting a Scene, it will no longer cause an error when trying to destroy the children on its display list. Fix #6675 (thanks @crockergd@gm0nk)
*`DynamicTexture` will now automatically call `setSize(width, height)` for both WebGL and Canvas. Previously it only did it for WebGL. This fixes an issue where DynamicTextures in Canvas mode would have a width and height of -1. Fix #6682 (thanks @samme)
*`DynamicTexture.setSize` will now check to see if the `glTexture` bound to the current frame is stale, and if so, destroy it before binding the one from the Render Target. This fixes an issue where constantly destroying and creating Dynamic Textures would cause a memory leak in WebGL. Fix #6669 (thanks @DavidTalevski)
* The `BloomFX` and `BlurFX` and any custom pipeline that relies on using the `UtilityPipeline` full or half frame targets will now correctly draw even after the renderer size changes. Fix #6677 (thanks @Nerodon)
* The `PostFXPipeline.postBatch` method will now skip `onDraw` if the pipeline hasn't booted, introducing an artificial frame skip. This should potentially fix glitch errors on mobile devices where Post FX would appear corrupted for a single frame. Fix #6681 (thank @moufmouf@tongliang999)
* The `Matter.Body` function `scale` has been updated so if the Body originally had an `inertia` of `Infinity` this will be restored at the end of the call. This happens if you set a Matter Body to have fixed rotation. Fix #6369 (thanks @sushovande)
## Examples, Documentation, Beta Testing and TypeScript
My thanks to the following for helping with the Phaser 3 Examples, Beta Testing, Docs, and TypeScript definitions, either by reporting errors, fixing them, or helping author the docs:
