I think to best answer your question if you could provide the page in question that would certainly help. We do recommend using the jQuery event handler extensions now rather than the link tracking extension.
The tag companion Data options are being picked up because they are tags with a href value of http://yoursite.com/# which is why the filtering does not stop this.
My only suggestion is that if you want to keep the link tracking extension, you would need to use the custom handling to filter out Web companion based events, using the variable link. So for example:
This is checking for a Tealium CSS class and causing the extension to finish if it's detected.
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