The problem never occurs when the document has been created from within Wordpad. But it always occurs when the document is created with the "New->" context menu.
When I create a new "rich text document" (on the desktop for example, right click, "new" -> "rich text document") and double click to edit it, the changes are never saved on that file.
I get the dialog "Do you want to save changes" but changes don't get saved.
Do you get the same behaviour?

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