RY!!! Two points for that one!!!
CTL. I’m Chassidic, though not belonging to that particular community. I do belong to a community that’s mostly mainstream… additional focus and attention put on various aspects of Avodas HaShem. (will אי”ה not elaborate…don’t wish to reveal too much). While it is NOT our minhag to do so, and by us it would indeed seem strange, know that these are Minhagim passed on from leaders who were Torah giants, had Torah, Gemarah and Halachah on their fingertips. Hidden Torah and Kabbalah as well. They knew what they were doing. I think one of those is the Rebbe of Sanz, isn’t he the one who runs the Mifal HaShas and accessories? If he expects others to be baki, fluent in the WHOLE Torah, every single part of it, doesn’t it make sense that he does too?
So I’m quite sure if he actually does it, there’s a reason why. And he knows what he’s doing.
What’s exactly going on? Can’t tell you! (I’d have to be a Rebbe… then I couldn’t be blogging away here..) But I could speculate it’s a veiled method for a Chassidic master to send Yeshuos, convey his blessings for his flock.