<@U2SKJHSGK> This happens because of platform type...
# stdlib
i
@miha-x64 This happens because of platform types coming from EnumMap:
EnumMap<K, R>
is
MutableMap<K!, R!>
and therefore it's assignable both to
MutableMap<in K, in R>
and
MutableMap<in K, in R?>
(//cc @denis.zharkov)