v11.3.11.x (up to v11.3.11.11) contains some serious issues

[cliffowen]

I've noticed there's new releases daily but the bugs we're seeing are so significant the library cannot be used, and I dare ask.. if some unit or functionality testing could help before releasing? Latest build I tried is .11 which dropped 2 hours ago.

Examples:
I am using VS 2026, all dependencies updated to latest versions like CommunityToolkit.mmvm 8.4. Avalonia.Desktop 11.3.11 (and related 11.3.11 libs), etc.
Clone a clean project.
Load the solution into VS2026 and build.

Start with the simplest: DockSimplifiedSample
Drag Tool 1 window away and leave it floating. The docking area does not layout, the Tool 1 window does not repaint. Grab the Tool 1 window and drag it back. It cannot be placed anywhere. Docking tool 1 disappears and re-layout happens with only Document 1 window.
Restart. Try to drag Tool 1 and dock it on the right of the document window. Can't. Tool 1 disappears, Document window resizes to consume the entire window. Top, Bottom, even re-dock on the right.
Restart. Drag document 1 away. It does not repaint. You cannot drag it back to the main window at all, it won't even pretend to dock.

I want to make a Mvvm sample.. start with DockMvvmSample.

The sample works, more or less, except the windows in the upper right. Tool 5 and Tool 6 do not repaint properly. If you drag them elsewhere, they can go but you can only drag 1 of them. Any other window that behaves properly will stop behaving properly if you drag it to the upper right.

Once there is only 1 window in the upper right, whatever it is you cannot drag it away. It's stuck. It won't repaint properly, won't respond to the drag.

Go to the windows on the left. Drag all of them away. Notice that you cannot drag the last one away. In my case it was Tool4 that got left behind. Can Close, Can Float, Can Pin, Can Drag, Can Drop are set. You can not drop onto tool 4. You cannot get anywhere near the dock left button because it disappears. That area is now dead space.

Close Tool 4. Now try to drag anything and dock to the left of the document area. You cannot dock anything to the left of the document area at all.

Suggestions:

[cliffowen]

I meant to say: Suggestions? Anything I should check, or try or do? Go back to version X.Y.Z?

[wieslawsoltes]

@cliffowen Please check dockable setting and dock setting in DockMvvmSample factory as some tools / docks can't drag actually.

[cliffowen]

Yep, tried all that.

[wieslawsoltes]

@cliffowen It's one man project so expect some bugs slip in especially where new big features added, some sample apps might break, sorry but can't test all of them. If you find major bugs please open issue with repro and it can be fixed.

[cliffowen]

I can enter some issues to help out, though I brought them up at the beginning of the thread. I was hoping you'd provide more useful information like "CommunityToolkit.mmvm 8.4" has known issues, stick with version 8.2 for now or something similar like .NET version XYZ changed some API.

However, I will only enter the issues I already brought up. It feels fundamentally broken enough that it should be easy to find them. I'd start with the Simple project.

[wieslawsoltes]

As I said some things you described are not issues just how dock is setup in those samples preventing certain features using dockable flags or dock flags.