Inconsistent newline behavior based on order of insertion #387

I stumbled over this behavior today:

table().add("a", table()).add("y", 3.2).as_string()
'y = 3.2\n[a]\n'

table().add("y", 3.2).add("a", table()).as_string()
'y = 3.2\n\n[a]\n'

I wouldn't expect the results to differ, because in both cases the literal is inserted above the table. It seems that the second result is what should be always produced, because it conforms with the current practice of always separating tables from previous content by an additional newline. But this seems to break when inserting a literal over the first table in the document, if I see that correctly.

tomlkit 0.13.2
python 3.12.7
linux