Problem with menu on system navigator under webtier 9.34P4

Hello

I installed a new web-tier environnement 9.34P4 with Tomcat 7.  Exactly same environnement that 2 other environnement. Maybe very little diffrence between release of Tomcat 7 and JRE.

And on this new environnement, when I click on some menus, they do not open when there are many sub-menus. This does not happen for all, for others it works perfectly. This comes from my Tomcat7 environment because if I attack the same SM server with another WebTier (with the serverHost and serverPort parameters) cemla works. Someone has already met the case and if so what may be the problem?

 

thanks a lot in advanced

David