Bug 73027 [Dialogs] Buttons are too high
I20040831 Buttons are no longer oval but have a rounded rectangle shape (see first screenshot). The second screenshot shows how buttons using the small system font should look like.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/FieldEditor.java
this.labelText = text;
    }
    /**
     * Returns whether this field editor contains a valid value.
     * <p>
     * The default implementation of this framework method
     * returns <code>true</code>. Subclasses wishing to perform
     * validation should override both this method and
     * <code>refreshValidState</code>.
     * </p>
     * 
     * @return <code>true</code> if the field value is valid,
     *   and <code>false</code> if invalid
     * @see #refreshValidState()
     */
    public boolean isValid() {
        return true;
    }
    /**
     * Initializes this field editor with the preference value from
     * the preference store.
     */
    public void load() {
        if (preferenceStore != null) {
            isDefaultPresented = false;
            doLoad();
            refreshValidState();
        }
    }
    /**