Breaking change: FileStream does not synchronize file offset with OS anymore

[carlossanlop]

FileStream does not synchronize file offset with OS anymore

@adamsitnik described it in detail here: dotnet/runtime#50860

cc @jozkee

Version introduced

.NET 6.0 Preview 4

Old behavior

New behavior

Reason for change

Recommended action

We will write a blog post with recommended practices.

Category

• Core .NET libraries

Affected APIs

System.IO.FileStream APIs that used to update the OS file offset.

Finally, please remember to email a link to this breaking change issue to .NET Breaking Change Notifications.

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Issue metadata

• Issue type: breaking-change