Ok, I verified with 1.0.1 issue is still present, both with Kotlin 1.3.41 and 1.3.50. I also found out why it "works" without my config. That's only because I have 0 permitted issues in it, in fact the import warning is still issues without config it just does not fail the check.

Please note that you are mixing up two rules:

NoWildcardImports

and

WildcardImport

NoWildcardImports

is a

style

rule and a wrap of a KtLint rule. Documentation of the rule is here: https://arturbosch.github.io/detekt/formatting.html#nowildcardimports

That is why test passes, it checks

WildcardImport

in isolation

Maybe it's more of a documentation issue, it should be stated somewhere, that it does not matter what exclusions are configured for the latter, if the former is enabled. If one needs more permissive check,

NoWildcardImport

should be disabled and

WildcardImport

may then do the checking according to its configuration

Anyway I edited my messages above with links to the documentation 👍