Webdynpro Search Help Values are transparent but they are in

Hi,

The problem is the next. After upgrade to Sap Netweaver 7.40, when we used the F4 on a field, the search help is displayed, but the values are transparent, I mean, if four example, the search help must return four lines, there are four lines in the search help, but, the values are transparent; anyway, we know that the values are present because if we click on several lines, several values are loaded in the field of webdynpro.

Could anyone, please, help us?

Thanks for all.