A bug has been reported where uploading images with size details in a Markdown table causes the table to break. Steven provided an example of the issue and suggested a workaround by removing the size details from the image syntax. dax reported that the issue does not occur for them.
As an alternative, md-misko suggested escaping the vertical line inside the table using \|.
I think it’s a new bug, in a table, when you upload an image the | separating the name of the image and the size works as a new column and breaks the table: