veenaBOL opened a new issue, #4088:
URL: https://github.com/apache/logging-log4j2/issues/4088
## Description
We are observing that log messages are getting truncated when logged using
Log4j, particularly when using the following configuration:
<PatternLayout pattern='%m%n'/>
This impacts critical logs such as log.fatal(message, throwable) where the
complete message or stack trace is not fully printed. This is particularly
noticeable for fatal and error logs where the message size is significantly
large.
## Configuration
**Version:** 2.25.3
**Operating system:** macOS 15.6
**JDK:** OpenJDK 17.0.12
## Reproduction
1. Configure Log4j with:
<PatternLayout pattern='%m%n'/>
2. Log a message with a large string or exception:
3. log.fatal("Large message...", throwable);
Check the output logs.
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