multi-emit fsi debug -- watch variables don't work

[KevinRansom]

In this session there are four sperate submissions, all sent in one go by using Alt+A select all then Debug in Fsi from the context menu. Note that locals and Autos are empty .. and the watch window claims x, y and z do not exist.

This happens because each section of code is separated by ;; and executed in a single submission.

Expected: All submitted code to be compiled and then executed.

Note: This behavior requires this PR: #14537

[KevinRansom]

Harrumpph!!! VS2019 did the same:

[majocha]

I tried to look what the Roslyn Expression Evaluator is receiving when debugging F#.

Debugging a net8 console app:

1. Module instance Unoptimized

2. Everything works fine.

Same code, but Debug in Interactive:

1. Optimized, this is regardless of optimize flag in F# Tools settings.

2. Next thing that happens is an assertion fail in MetadataDecoder.cs:

[vzarytovskii]

Hm, wondering why. I'll try not forgetting to look at it next week

[rgbav]

Any updates on this issue?