When using an TextField inside parameterFields, after submitting your search, spaces are getting replaced by + icons.
See the screenshot below for some "example";

Simple work-around is to use str_replace("+", " ", $params['Param']) to replace the +'. But this is not ideal (and confusing for end-users).
Also experiencing this issue when searching for an member with SilverstripeMFA report; https://github.com/silverstripe/silverstripe-mfa/blob/4/src/Report/EnabledMembers.php
When using an TextField inside parameterFields, after submitting your search, spaces are getting replaced by
+icons.See the screenshot below for some "example";

Simple work-around is to use
str_replace("+", " ", $params['Param'])to replace the+'. But this is not ideal (and confusing for end-users).Also experiencing this issue when searching for an member with SilverstripeMFA report; https://github.com/silverstripe/silverstripe-mfa/blob/4/src/Report/EnabledMembers.php