Hello, all Maybe this problem has been already addressed before, but I didn't find anything about it in contextgarden and ML archives. So, here you are. I have a document laid out in two columns, and some wide tables laid out using Natural Tables syntax. These tables are then placed on the document this way: \placetable[top][table-1020]{Intersystem Travel Times}{\getbuffer[tablebuffer-id]} When I compile my files using XeTeX engine, the table is placed at the top of the page, spanning two columns. When I use the LuaTeX engine, the table is placed in the middle of a column and cut off by its page margin or overwritten by the neighbouring column text. I define column sections by using the \startcolumns...\stopcolumns directives. Do I have to switch to columnsets? A sample of the problem I depicted here can be found at: http://www.lambertini.org/testfloats.zip . The zip file contains two pdf (one compiled with XeTeX, another with LuaTeX) and the TeX source. Thanks in advance for your responses, Massimiliano Lambertini