$/ not always set after a regex match?

In a fresh 2022.12 Raku REPL, when the endpoint of a sequence is a Regex,
the $/ variable seems not to be set:

[0] > 1 ... /9/
(1 2 3 4 5 6 7 8 9)
[1] > $/
Nil

If I match more explicitly using a WhateverCode, it works:

[2] > 1 ... * ~~ /9/
(1 2 3 4 5 6 7 8 9)
[3] > $/
｢9｣

Is this the intended behavior, or a bug?