Petr

@dsyme @vzarytovskii so after spending 30mins trying to reproduce this, I am fairly sure this is actually related to F# CodeLens, and only in the "above the line" mode. You...

For now, closing this as a duplicate of #12625 Please reopen it if you can reproduce it without CodeLens involved.

@richardwerkman, late to the party, but just saying that when something similar pops up again in the future, we can make use of built-in env variables like [Path.DirectorySeparatorChar](https://learn.microsoft.com/en-us/dotnet/api/system.io.path.directoryseparatorchar?view=net-7.0).

Right, yep, thanks for the detailed explanation, it makes sense :)

Thanks for jumping on that @dupdob @rouke-broersma! I appreciate this given the fact that nobody enjoys solving flaky issues :) So: > I guess that log2.txt reflects to a correct...

Sooo I deasynced the tests but the behavior is still the same. So I guess async/sync stuff is unrelated :(

Mhm alright, I'll try to glue something up, hang on then :)

Mmm okay this takes more time than I thought and now I'll go on vacation for some time. But I'll come back and get back to that :D

@dupdob so I'm back here. You know actually this is probably a correct assumption. While simplifying my repro, I got rid of the basic test (not a theory) and started...

So... so, so. I have finally created a repro and stumbled upon quite a weird thing. [Repro.zip](https://github.com/stryker-mutator/stryker-net/files/9529484/Repro.zip) The problem might be elsewhere. In the repro, see the git history -...