Just noticed this calving in the Weldon Glacier in the Weddel sea, between the Filchner and Brunt shelves. It's not a very significant glacier but I found nothing about it on this forum, so I thought I'd just make a thread for completeness' sake.
It seems to calve about once a year on average, forming rows of rectangular icebergs that accumulates in fast ice for a few years, and then are washed away once in a while. Kind of similar behavior to Thwaites in that regard, although at a much smaller scale.