Tree view widget doesnt show deeper than auto expand depth

I configured the tree view widget in Mendix 6.10.3 and used 3 levels. Everything seems to work fine, except it doesn't show levels deeper than 2 (i.e. showing only level 1 and 2). When I increase the auto expand depth from 1 to 3 it does show everything. However, I don't want to show everything immediatly as I have a large data set. How can I see all the levels without increase the auto expand depth? Am I missing something? Do I need to configure an action?
1 answers

Seems like a bug in the widget associated with prefetching data.
When disabling pre-fetch the expand icon is also shown for deeper levels.
Tried this in Mendix 6.10.5 with the latest version of the widget.