Worked on enhancing the reliability of dynamic plugin topic caches within the JetBrains/intellij-community repository, focusing on backend and plugin development using Kotlin. Addressed a critical issue in the MessageBusImpl component, ensuring that when multiple plugins are loaded dynamically, all listeners are registered correctly without being overwritten or causing stale references. This targeted bug fix improved the stability of inter-plugin communication by preventing duplication and corruption of topic delivery during plugin load and unload cycles. The solution contributed to a more robust plugin ecosystem, reducing runtime errors and supporting consistent message delivery for developers working with the IntelliJ Platform.