Jan Kučera

@huiliuss It is not as much as solution as a workaround. Also as I showed above, SnapsToDevicePixels is not enough, which is potentially a bug.

Local copy of the repro: [ImmediateValidationBindingTest.zip](https://github.com/dotnet/wpf/files/15324081/ImmediateValidationBindingTest.zip) Also it is helpful to include the actual error text, which is > System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for...

That is what the CellEditEnding is for, it will get called when the cell is about to finish editing, and you get an opportunity to either cancel and stay in...

possibly duplicate of #2995?

Hm, but I cannot repro on 9.0.100-preview.1.24101.2. Maybe that fix did not make it to 8.0.2 version?

Yeah I don't have anything against the code change, the use case seems a bit weak because the gesture will never match anything and the desired outcome can already be...

No objections. I don't mind `sealed` either way - as discussed, it has a potential for perf improvements, although possibly not in this usage.

Can someone clarify what the migration expectations to newer versions of WPF are in general? Why are we expecting .NET Core 3 apps to run on .NET 9 without any...

Is this only XAML parsing issue or runtime too? (Since it's a dynamic resource, a wrong type can be provided at runtime. If that now crashes and didn't used to,...

I agree that these are errors in the applications and not WPF, and I fully support the early, compile-time failure. However, already during one preview release there is evidence this...