IntelliJ IDEA 2025.3.3 release notes

IntelliJ IDEA 2025.3.3 is out with the following improvements:

MCP server output schema now correctly handles default properties in the schema, preventing invalid schema errors during structured output. [IJPL-230494]
Downloading the IDE backend now works as intended with a configured proxy. [IJPL-164318]
Resolved an issue that prevented successful proxy authentication. [IJPL-231829]
Package annotations referenced through JAR dependencies are now correctly reflected in the PSI model. [IDEA-383732] Get more details in our blog post.