shouldContain does not offer "Click to see difference" about kotest

[Kantis]

Diffs only work when we have a failure on the form:

expected: <X>, but was: <Y>

Which obviously doesn't work for shouldContain.

[awallat]

So would it work if the message for my test "B" would be:

expected: "d" to be contained in: "abc"

A diff would really help if my string I want to check is huge (e.g. XML) and I only want to check a small part of it. Then the diff should show me which part of my expected string failed. Or is there any other approach?

Thanks a lot for your help!