Typing "Print S" in Blueprint Graph Context Menu returns a result that does not contain the letters "Print S" this issue persists is you add another s after (Print ss). The search should display something that contains the letters such as "Print String".
Versions Tested:
4.15.3 - CL 3450819
4.16.2 - CL 3514769
4.17 - CL 3528061
Head over to the existing Questions & Answers thread and let us know what's up.