<p:password>popup doesn't work well

[Ade]

Hi everyone,
when i am using <p:password> component ,i am in trouble.i hvae a <p:tabView> including four <p:tab>.i use "password" 's inline attribute as default.
when i use "<p:password>"in the first tab,the promptLabel works well,i mean position of it is default.
But when i use "password" in the seconde or the later "tab",the promptLabel flies to the left upper corner.it should be in the right of the "password" component.

My code as follows:
<h:form>
<p:growl id="messages"></p:growl>
<p:password feedback="true" id="newPwd"
value="#{reRewritePassword.newPwd}" goodLabel="good"
promptLabel="please input password" weakLabel="weak" strongLabel="strong"></p:password>
</h:form>
Environment:JBoss 6.0 spring3.0 JPA2.0
Can give me some suggections?
Thanks a lot.