On May 30th, the user "dalekmodhyped" pointed out the following:
"started since I updated to 57. the doors themselves don't show but the frame does."
I am here to affirm this isn't just him, but a problem myself and many other players are having. Since Update 58, it has been fixed somewhat in the sense that the doors are once again in the frame, but now they are in the wrong position and invert into themselves when opened. Below are two screenshots to properly showcase this.