[tex-live] display issue with "tlmgr help" ??

[jfbu]

Hi,

when I do tlmgr help, I observe this:

1NAME1
    tlmgr - the native TeX Live Manager

1SYNOPSIS1
    tlmgr [1option1]... 1action1 [1option1]... [1operand1]...

1DESCRIPTION1
    1tlmgr1 manages an existing TeX Live installation, both packages and

....

in my Terminal window.

rather than boldened NAME e.g.

I first observed it around September 1st, but today I confirm it on
a pure TeXLive 2017 on another Mac OS (fully updated today).

doing "man tlmgr" produces the expected highlighted output
ending in 

       $Id: tlmgr.pl 45190 2017-09-01 08:01:01Z preining $

perl v5.24.1                      2017-09-01                          TLMGR(1)


doing "tlmgr help" produces the output non-highlighted
(but apparently with highlight markers) and ending also with

    $Id: tlmgr.pl 45190 2017-09-01 08:01:01Z preining $

Any other relevant info I could provide ?

Best

Jean-François