Is this formatting expected?

< 1.0.0
val concurrentMap = Caffeine
    .newBuilder()
    .maximumSize(1000)

1.0.0
val concurrentMap = 
    Caffeine
        .newBuilder()
        .maximumSize(1000)

Yes correct. Since

1.0.0

the

ktlint_official

code style is the default code style. In this code style the rule

multiline-expression-wrapping

is enabled by default.