rschmitt opened a new issue, #3835: URL: https://github.com/apache/logging-log4j2/issues/3835
## Description The default logging configuration in `log4j-core` has clearly regressed, with newlines no longer being emitted. ## Configuration **Version:** 2.25.0 and 2.25.1 **Operating system:** macOS Sequoia 15.5 **JDK:** Corretto 17.0.16 _inter alia_ ## Logs ``` [0] ~/src/logging-log4j2 # ./run.sh Darwin 842f57b044d8 24.5.0 Darwin Kernel Version 24.5.0: Tue Apr 22 19:53:27 PDT 2025; root:xnu-11417.121.6~2/RELEASE_ARM64_T6041 arm64 Testing 2.20.0 13:46:13.785 [main] ERROR org.example.App - error level message 13:46:13.785 [main] FATAL org.example.App - fatal level message Testing 2.21.1 13:46:14.428 [main] ERROR org.example.App - error level message 13:46:14.429 [main] FATAL org.example.App - fatal level message Testing 2.22.1 13:46:15.124 [main] ERROR org.example.App - error level message 13:46:15.125 [main] FATAL org.example.App - fatal level message Testing 2.23.1 13:46:16.213 [main] ERROR org.example.App - error level message 13:46:16.214 [main] FATAL org.example.App - fatal level message Testing 2.24.3 13:46:16.827 [main] ERROR org.example.App - error level message 13:46:16.828 [main] FATAL org.example.App - fatal level message Testing 2.25.0 2025-07-18T20:46:17.428495Z main ERROR error level message2025-07-18T20:46:17.429704Z main FATAL fatal level message Testing 2.25.1 2025-07-18T20:46:18.478564Z main ERROR error level message2025-07-18T20:46:18.479927Z main FATAL fatal level message ``` ## Reproduction Run `./run.sh`: https://github.com/rschmitt/logging-log4j2/tree/default-config-repro -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@logging.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
