As long as you have that Greasemonkey script enabled, you probably won't notice any consequence. But if you turn off the Greasemonkey script as well, Google search links will start redirecting again.
*Always* check the changelogs BEFORE updating that important software!
Board search is currently partially broken: https://forums.informaction.com/viewtopic.php?f=14&t=21752
Workaround: use your favorite search engine, add site:forums.informaction.com to your query