ran it from cmd (simple ktlint in the offending folder), got a related warning:

TextInputLayoutMatchers.kt:3:1: Imports must be ordered in lexicographic order without any empty lines in-between with "java", "javax", "kotlin" and aliases in the end

funny, spotless didnt report the numerous other warnings eg

unexpected indentation (28) (should be 24)
Missing newline before ")"
etc

spotless might be using an older version of ktlint by default

i specify the version via spotless 🙂

interesting..