Inconsistent behavior of Dates.now () when milliseconds are zero

[UniqueTokens]

It would be nice if Dates.now() would always show the milliseconds, even if they are zero.

Current behavior: 2021-10-24T15:55:06

Expected behavior: 2021-10-24T15:55:06.000

Minimal working example

using Dates

while true
    now = string(Dates.now())
    if length(now) != 23
        println(now)
        break
    end
end

[ararslan]

As a general breadcrumb, this seems to be done explicitly: https://github.com/JuliaLang/julia/blob/master/stdlib/Dates/src/io.jl#L684-L691. Git blame shows that 0 milliseconds has been truncated for many years at this point.