Spring ComponentScan excludeFilters via FilterType.REGEX does not work with escaping

I tried to exclude an entire subpackage of my SpringBootApplication (Spring Boot Version 2.1.10.RELEASE) from component scan with annotations and values equivalent to this:

@SpringBootApplication
@ComponentScan(basePackages = "some.ba_se.package",
    excludeFilters = @Filter(type=FilterType.REGEX, pattern="some\\.ba_se\\.package\\.ignore\\..*"))

This does not exclude the some.ba_se.package.ignore package.

Comment From: jvs64893

Nevermind, I've found a problem somewhere else that caused this.

Comment From: Sloloem

@jvs64893 So what was the problem?