Mercurial removes untouched files on merge between two branches

I have successfully开发者_运维知识库 performed a merge between two branches but after looking at the logs I see that now files are missing.

Those files have unicode filenames but I do have the utf8fix extension installed.

Could the fact that they have unicode filenames be related?

Here's a screenshot of what happened:

Notice the remarks on the screenshot.

What could be wrong?