Window scrollbar issue with sticky component

[mertsincan]

Reported By PRO User;

<p:panel id="globalMessagesPanel" styleClass="panelNoBorders">
<p:messages id="messages" autoUpdate="true" showDetail="true" globalOnly="true" />
</p:panel>
<p:sticky target="globalMessagesPanel" />

when the sticky panel appears, exists a browser window size for which is not possible to scroll down.
It seems that the panel tries to become sticky changing the page height; with the new height it probably does not need anymore to be sticky and switches back to the non sticky mode and it starts from the square one.
The page shake and the only option is to change the window size of the browser.