Logger.debug() are ignored in logging.properties

Since upgrading to 8.5.2 debug statements in Java code are ignored.

I am using slf4j and the jdk-appender to log via the default logging.properties. Log statements using logger.info() works properly, but debug statements are ignored, even when setting .level=ALL and java.util.logging.ConsoleHandler.level = ALL. The correct level to set should be FINE.

My logging.properties is otherwise unchanged.

Is anybody familiar with this?

Bjørn