Problems with document opened in the same window

I have a view in which the property “Target Frame(double click)” is set to the same frame as view. hence when the document is opened from the view, it opens in the same window. now I have a problem with the @Command([ToolsMarkSelectedRead]) or menu Edit->Unread Marks when the document is in read/edit mode as it flashes “No documents in that direction” error.

also if the document has an unread mark and when I close it taking back to the view in the same window, it is not marked as read.

my question is why is this happening. is this a bug with notes when the document is opened in the same window?

I think this is a great point to ponder. any inputs?