Hi Karoly. This is a nasty CSS bug I am not able to sort out yet. The problem is that the translator's table gets too wide so it hides under the right column. A temporary solution is to dock all blocks from the right column so that the right side column disappears and the table has enough space.
I am not sure I can do that with a forms served by a server. I have reduced font size to a minimum, now the edit target field is visible, the problem is I do not have the binoculars required to work with a 2-point font