How do you paste the Word table: do you use the Paste, Paste From Word or another button? Have you set the StripFormattingOptions property
I will also need sample MS Word document and detailed steps how to reproduce the reported problems.
Let me provide you with details what is happening when pasting content from MS Word. The paste process is controlled entirely by the Operating System and by the browser. The editor is not allowed to interfere in this process much (of course there are some minor differences between browsers). Thus, with respect to pasting - the original MS Word formatting is not HTML. It is MS Word specific XML formatting. When this is exported to the clipboard, and is made available for paste, it "announces" what "paste flavors" it supports - and those would be MS Word, HTML, Plain text, RTF and so on.
When a client entity (such as the editor) wants to consume the content of the clipboard, it announces what paste formats it supports (and the editor - any editor - only supports plain text and HTML). So, MS Word converts the original MS Word to HTML, and this process is controlled entirely by MS Word, and not at all possible to interfere by the editor. The content pasted from Word and provided by the clipboard also differs under the different browsers and there could be differences how the tables and other elements look under the different browsers.
If the user does not strip the Word formatting, the pasted content will look similar to the original Word content. If the Word formatting (o:p tags, mso attributes and styles) are stripped the content could differently than the original one.
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