I\'ve got a ListBox that displays an ObservableCollection of Talent objects. When the user hovers over each item in the ListBox, I\'d like to display in the ToolTip several piec
I don't know whether I've experience the same issue as the OP, but the source of trouble for me was the following implicit style:
The purpose of this style was to eliminate long-winded tooltips from exceeding viewable screen area, but it only works on standard, inline tooltips. Attempting to create a custom, elaborate tooltip resulted in the "System.Windows.Controls.StackPanel" that the OP reported. Removing this implicit style immediately resolved the issue... however also removes the nice 600 DIP width restriction.