>I was looking at Message#1654929 . I then tried to save it to one of my pre-defined folders (click on Save to folder, then select the folder from the dropdown). In the past, within a second I would get a confirmation "Message successfully saved..." and the message would appear in the selected folder.
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>Nothing appears to happen now when I try that, the message is not saved.

This is fixed.

It requires a reload of the interface.