Its not publicized if the Rebbiem did so, however it seams to be a zichron for a pesach blood libel/nes that happened with the Maharal.

How does this article take from this from that that “it’s perfectly okay to do it”?

Do we follow minhogei Chabad or not?
Or is this all a free for all?

Should Lubavitcher chassidim be looking בשדות של אחרים for new minhogim to adopt?

Maybe I’m a little naive but I’m open to hear another perspective if anyone else would like to share.

Hatzlocho!

P.s.
(In the source material of this article the above-mentioned source is mentioned in passing but not quoted)