VS: option pages erroring.

[majocha]

This is not the released version, but a vsix built from latest main installed into latest VS 17.12.0 Preview 1.0.

The first commit that breaks this for me is:

bc40f6a (#17537)

ETA:
External WPF bug: dotnet/wpf#9582

[majocha]

Huh?

[vzarytovskii]

Hm, not the first issue with the options - #17015

[majocha]

OK it still worked before #17569. Shouldn't take long to bisect.

[vzarytovskii]

Wondering if translations are out of date

[majocha]

I think all the strings we use in XAML are bound with x:Static so anything missing would fail at build.

I suspect some dependencies changed and are somehow conflicting with net472 era WPF in a way that surfaces only at runtime. Roslyn uses quite a lot of XAML in the C# extension, I wonder if they're seeing this problem.

I tried to identify the exact change when this shows up.
The last commit this still works is 6cd4d59,
the next one: bc40f6a (#17537) it's broken.

[majocha]

So, the only change is the update to net9 preview 7.
This looks very much like this dotnet/wpf#9620, but why on earth would it affect us if we're targeting net472🤔?

[majocha]

OK, this is very likely external and related to net 9 preview 7 changes.

I created a simple WPF app targeting net472:

It works fine when built and run from stable VS (17.11.1)

but add a global.json with

  "sdk": {
    "version": "9.0.100-preview.7.24407.12"
  }

and it breaks the same way as our vsix:

[vzarytovskii]

Thanks for investigating, hopefully it is fixed with rc1.

[majocha]

Yes, quite a relief nothing's broken on our side 😅.