Unexpected Bubble Bokeh

Canon EOS5D Classic

Carl Zeiss Ultron 1.8/50 M42 with adapter

 

I certainly did not expect the bokeh obtained with the Carl Zeiss Ultron to look like this when there are multiple highlights in the background! It's true Meyer Görlitz style! :-) But I assure you this was not shot with a Trioplan.

Done