Is it possible in Safari to draw the contents of a MediaSource video to a canvas?

Question

safari

In Safari 11.1, when trying to draw the contents of a MediaSource video to a canvas using the drawImage method, nothing draws ( Example , video above, canvas below it), while if the video source is specified as video.src, then there is no problem, the video is drawn ( Example ) . There is no problem in other browsers. In Safari Technology Preview, the problem is also present.
There was Bug 125157 in the WebKit bugtracker , but it's marked as resolved, and judging by the versions, as far as I could figure out, Safari 11.1 should have been in by now.
Maybe there is some workaround to draw mse video on canvas in Safari, or just wait for new versions?