During November 2025, Miika Tuominen focused on improving Neovim’s LSP folding support in the MeanderingProgrammer/neovim repository. He addressed a subtle but impactful issue by implementing a Lua-based fix that ignores invalid or zero-length folding ranges returned by language servers. This adjustment required careful handling of edge cases in folding range validation, consolidating defensive checks to prevent instability and reduce erroneous folds. By refining the folding range processing logic, Miika enhanced the reliability and correctness of LSP-driven folding for Neovim users. His work in LSP development and Neovim plugin development contributed to a smoother editing experience and reduced support overhead.