I'm not sure what you mean, unless you have a wiki article with the same name as that person's name.
I have found a bug that can contribute to this: when deciding what tags VaultWiki can and can't put autolinks inside, it ignores the Custom BB-Code tag setting "Disable Automatic Link Parsing Within This BB Code." It should use the value of this setting. If DBTech's MENTION tag has this option turned on, then it will be excluded started with the next release.
On the other hand, if DBTech hasn't added the MENTION tag via the Custom BB-Codes Manager (and arguably, it should, to increase compatibility with other mods), then there is another way to prevent wiki auto-links inside MENTION tags:
Create a plugin at hook location vw_autolinks_create. For example, for MENTION, the code would be:
Code:
$linker->skip_tags[] = 'mention';
Marking this as fixed, since the bug I noted above has been fixed in the next release.