is there a bug in HTML export?

edited 2:41PM in FastReport 4.0
I have text in a Rich Edit that includes tab spaces to line it up in columns. If I print or export to pdf the text lines up as intended. If I export to HTML the tabs are converted to single spaces. Is this a bug or have I missed some setting somewhere?

If I look at the htnl file with notepad it seems that the html code is using the tab char (#9) which is interpreted as a space ( ) but it should be using  

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Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.