Right sidebar ovelaps tabs

This is actually Drupal CSS issue, Newswire does not modify the standard Drupal theming for local tasks tabs:

system.css (line 215 approx)
ul.primary {
white-space: nowrap;
}

white-space: nowrap; is the culprit here.

I'll strongly consider overriding this and modding the way tabs are displayed, the standard Drupal way is not cutting it as shown by your screenshot.