In FSharp.Core 4.7.0 the name of Discriminated Union is ignored in text formatting even if [<RequireQualifiedAccess>] is present.

However in 4.7.2 this name is added as a prefix for union case.

Repro steps

1. Use FSharp.Core 4.7.2
2. Declare a union type with RequireQualifiedAccess attribute:

[<RequireQualifiedAccess>]
type ResponseGroup =
        | ItemLarge
        | None

3. Format it using %A as in sprintf "%A" ResourceGroup.None

Expected behavior

Snippet above yields "None" as it would in 4.7.0

Actual behavior

It yields "ResponseGroup.None"

Known workarounds

• Override ToString() and use %O instead of %A
• Remove RequireQualifiedAccess if that's applicable.
• Rollback to FSharp.Core 4.7.0

Related information

• Windows 10 Pro
• Net core 3.1