The specification <configuration scan="true> does not work with spring-boot application.

By testing the recent source code, I realized ReconfigureOnChangeFilter.decide become not called after the spring-boot application started.
After that, it is called several times only when some log message is output.
Moreover, timestamp check is skipped for 511 calls at most by checking invocationCounter and mask.

So, even when the time period (60 sec) has passed, the timestamp of the configuration files are never checked unless log messages are output many times.