Socialspy makes whole username appear white with no prefix when they're talking if the prefix is long.

Adding onto this, when using /list I get this:

As far as I know, these are both done as intended. What is the issue here?

Prefixes aren't appearing, same occurs in tab too.

Afaik there are other plugins that can modify the tab list. Also as long as I know socialspy never displayed colors or pre-/suffixes?

Ess doesn't use scoreboards to set prefixes, which is what would be in the tab. Socialspy has never displayed prefixes as it doesn't matter. You are just spying on their private messages.

The same happens in tab though, is this not an issue?

Nope. It's the default behavior.

Hmm, might be PermissionsEx

Like I said, we don't deal with tab at all.