May be it's a known bug/feature or whatever you would call it or may be the solution is well known and I didn't found it. In each of these cases excuses my question:
I have an extended data table with exactly one item and I can only select the item by clicking CTRL-button + mouse button left.
If I have more than one entries in the data table I can select at least the first element by clicking on it.
I think that should also be the normal behaviour with one element, shouldn't it?!
Thanks in advance.