Sigil 2.6.0; up-to-date Win 10 pro. Largeish (8Mb) epub that passes an [F7] check and an epubcheck.
I can search for something in all HTML files, but when I try to search for something in all CSS files, it crashes. No Sigil error message; nothing in the system logs. It doesn't crash when I do that search in an "empty" epub.
