SPQR gui settings in .properties/.yml does not work

[AnneMayor]

Hi,

I am using spqr gui and customizing some settings(endpoint, target-endpoint, page-title).
However, a page-title setting does not work well as I expected.(endpoint and target-end point settings work well like the below)

Library Version: v1.0.0
Here is a code that I wrote.

graphql:
  spqr:
    gui:
      enabled: true
      endpoint: /sample
      target-endpoint: /sample
      page-title: Let's play GraphQL!

result:

Please, let me know if there is something that I have to more.