We are currently facing the following problem, we have a excel sheet with some groups of row. We want aspose to show part of them collapsed an the other groups open.
When we save the excel with some groups collapsed, the aspose renders the collapsed row as hidden, and does not allow to open the closed groups. The open groups can be opened and closed as usual.
Why does this happens? It should just show the rows collapsed and allow to open them, right?
See attached a simple example.