[Users] Simplify Subject RegExp bug?

[ratinox at gweep.net]

Claws Mail 3.8.1 on Macintosh (MacPorts) and Windows (Colin's
svn1696 build).

On Macintosh, the General properties for a folder includes the Simplify
Subject RegExp option. On Windows the option is not available and
adding the appropriate entries to the folderitemrc has no effect.

Is this a bug? I couldn't find anything like it in the Bugzilla.

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