Since 8.1.1.05 and now also with HF1 of version 10.0 the use of wildcards in searches has changed. From now on a new operator "wildcard search" is provided, which will now allow a user to use wildcard characters in the search query.
All other comparison operators will not support wildcards any longer.
The new comparison operator "wildcard search" comes with the following main capabilities:
It allows 2 wildcard characters '%' and '_'
Underscore (_) - Returns results that contain any character in the position of the underscore
Percentage (%) - Returns results that match the pattern of the search string
Using backslash (\) before the wildcard character will make it behave like a regular character (e.g \% and \_)