Since Release 2.5 and implementation of SECURITY-2008 - CVE-2020-2290 we can't use the '+' character in our single select list.
We have a "Active Choises Parameter" with Choice Type "Single Select" to choose a version. Our versions have the format "<version>+build.<counter>".
The "+" character will be escaped to "+".
Is it possible, that this is a bug?