Groups field set (on node edit forms) has float which wrecks forms

In the global.styles.css file there is this reference (line 857 or so)

.page-node .field-name-field-topics, .page-node .field-name-og-group-ref {
float: left;
}

This float causes the form to break, see the following image

By removing the float the form works properly. Is there anywhere in the edit screens that this float is necessary or can it be completely removed?

Patch coming.

Cheers,

David