Affects: 6.1.1
It seems to be regression #26163 on spring boot 3.2.0. I checked 6.1.0-M4 is work and 6.1.0-M5 is not work. I guess, 39786e479080a337691a3a7d0490547e37a900e3 is affect to this.
Comment From: poutsma
We have a test that should verify this scenario, see https://github.com/spring-projects/spring-framework/blob/1734deca1e91fac25ea6b0f472a66e9882f63205/spring-webmvc/src/test/java/org/springframework/web/servlet/function/RouterFunctionsTests.java#L102, but looking at the sample code in #26163 not all scenarios are tested.
Specifically, the /person2/{id} and /person4/{id} handlers from the sample in #26163 do not work on 6.1.1.
Comment From: poutsma
This indeed due to 39786e479080a337691a3a7d0490547e37a900e3. Changes in the request attributes, like uri template variables, have not been been committed yet when the custom request predicate is evaluated.
Comment From: poutsma
Thanks for reporting this, it should be fixed in 6.1.2.