Avalonia

• Remove fix that broke SizeToContent.

• OSX WindowState is updated when Cocoa initiates a change that would cause WindowState to change.

• Binding to WindowState on OSX and Linux will now open windows with the correct state. Previously only worked on Windows.

• TreeViewItems take the full width of the treeview, so context menus can be activated via the entire row.

• Fix WeakEventManager (causing memory and slow performance after long running app)
• Disabled controls dont get selected with keyboard controls.
• Window Icon can be set to null without crashing.
• Closing OSX Window when full screen will not crash app.
• Inertial Scrolling fixed
• Fix deadlocks in OSX often seen with reactive ui.

• Fix NRE with Menus
• ItemsControl background fixed.
• OSX dont crash when application is full screen and closed.
• OSX rendering uses IOSurface, making SW rendering possible and rendering more efficient in all cases. Fixes some threading and potential deadlock issues.
• OSX exception swallowing fixes.

• Fix textbox undo issue.
• Fix unable to run on some Linux distros with GPU.

http://avaloniaui.net/blog/2019-12-13-avalonia-0.9.0-release

• OSX fix artifacts in window corners
• Fix referencing Resources in MergedDictionaries
• Latest itemsrepeater fixes
• ImmediateRenderer hittesting fixed
• SelectingItemsControl fixes
• Support Image.StretchDirection
• Win32 Right hand keymodifiers reported correctly
• OSX Dont swallow exceptions across native boundaries
• X11 (NixOS and WSL) dont crash with invalid monitor / window size.

• Native Global Menu Support
• Managed Notifications
• Managed File Dialogs
• Compiled XAML
• Touch Screen Input and Scrolling
• Grid, Stackpanel, DockPanel and WrapPanel ported from WPF.
• ItemsRepeater (experimental) ported from WinUI (UWP).
• Gesture Recognition
• In-Window Popups (optional)
• Support for application suspension (RxUI)
• New Application Lifetimes Model
• Managed File Dialogs (optional)

Many bugs fixes and performance optimisations

• Compatibility with OSX Catalina.

This release fixes a critical issue on the 0.8 codebase.

• OSX clipboard pasting corrupting strings.

We've backported several fixes from the master branch to our 0.8 codebase to be available as 0.8.1 on nuget:

• NumLock being disfuctional on Linux
• Blacklist for llvmpipe software OpenGL rasterizer on Linux (can be disabled in code or by setting AVALONIA_GLX_IGNORE_RENDERER_BLACKLIST environment variable to to 1)
• Horrible jitter issue on Windows when OpenGL/ANGLE acceleration is enabled
• Black screen issue on Windows when OpenGL/ANGLE acceleration is enabled

http://avaloniaui.net/blog/2019-04-05-avalonia-0.8-release

http://avaloniaui.net/blog/2018-02-18-avalonia-beta1.html

• Fixed binding to Task
• Fixed layout issue with margin #993 #984
• Don't try to use ITopLevelImpl after disposal (it was causing crashes with GTK backend and popups)