MKVToolNix v30.1.0 已发布，主要修复了 30.0.0 版本的 GUI 功能更新导致 Bug ，具体更新内容如下：
build system: fixed building on non-UTF-8 locales. Fixes #2474.
MKVToolNix GUI: multiplexer: implemented a workaround for drag & drop not working on macOS with Qt 5.12 due to a bug in Qt 5.12. Fixes #2472.
MKVToolNix GUI: chapter editor: when opening a Matroska/WebM file that doesn’t contain chapters and later saving chapters back to them, the editor was truncating the file down to a couple of KB in size. This was a regression introduced with the implementation of #2439 in v30.0.0 Fixes #2476.