Why can I not remove the second to last row from a table?

[KBHertzog]

I've been encountering this issue with the table blocks component. I can easily create a |1x1| table, but if I create a |1x2| table then try and remove either row, I'm unable to do so. This is true even on the official playground. As far as I am aware, a 1x1 table is supported GFM syntax.

[Saul-Mirone]

if you create a |1x2| table and want to delete the last row. The table will have only table header and will be invalid in markdown. So that's why you can't delete last line. If you create a |1x1| table, there will be no table header. But it will make the alignment stop working. So basically, |1x1| is supported in GFM, but milkdown can't support it due to some tech limitations.