Since 8.1.1 HF5 as well as 10.0 HF1 and now also with 10.1 the behavior of wildcards in searches has changed. From now on a new operator "wildcard search" is provided, which will 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 "\_")