'Mailto' links cause Server Error

Hello,

I use Grav v1.7.7 - Admin panel v1.10.6
Since the last update, links in the format mailto:[email protected] cause the page not to display. Instead, the page displays an error :

Server Error
Sorry, something went terribly wrong!
E_WARNING - Undefined array key "target"

I tried both syntax :
[[email protected]](mailto:[email protected])
or
<a href="mailto:{{ '[email protected]'|safe_email }}">**[email protected]**</a>
but none is working.

Is my syntax wrong or is this a bug ?

Note : I also saw on this forum that this issue already occured in 2016 and was corrected by developpers (Link of the post).

@csc, I'm afraid I cannot reproduce the issue on a fresh installation of Grav 1.7.10 + Admin.

Both syntaxes create valid anchors without throwing errors.