Worked on maintaining the JetBrainsRuntime repository by improving the reliability and maintainability of its test suite. Focused on problem tracking and testing using Java, the developer removed an obsolete OS-specific test entry from the ProblemList, specifically addressing the ChoiceMouseWheelTest. This update resolved or rendered the flagged issue irrelevant, resulting in a leaner test matrix and reducing unnecessary continuous integration noise. The approach ensured that the ProblemList accurately reflected the current scope of active tests, supporting clearer traceability through precise commit references. The work contributed to a more streamlined testing process without affecting the runtime behavior of the codebase.