Merge branch '2.7.x'

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnExpression.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,11 @@ import org.springframework.context.annotation.Conditional;
 /**
  * Configuration annotation for a conditional element that depends on the value of a SpEL
  * expression.
+ * <p>
+ * Referencing a bean in the expression will cause that bean to be initialized very early
+ * in context refresh processing. As a result, the bean won't be eligible for
+ * post-processing (such as configuration properties binding) and its state may be
+ * incomplete.
  *
  * @author Dave Syer
  * @since 1.0.0