First, I think I have found a bug, a little glitch in fact.
Select the combobox, open the options, double esc it. Next time you open it, the list will be blank (you have to delete the text inside, usability fail). Something about the "emptytext" and the filtering action.
The same bug hapens here, but a little bad, the list dont open at all:
<telerik:RadComboBox ID="RadComboBox1" runat="server"
<telerik:RadComboBoxItem Text="" Value="None" />
<telerik:RadComboBoxItem Text="test1" Value="0" />
<telerik:RadComboBoxItem Text="test2" Value="1" />
<telerik:RadComboBoxItem Text="test3" Value="2" />
Second, im trying to build a very simple combobox, with some options inside, AllowCustomText setted to false, and contains filtering on. If the user enter some customtext, and click outside the combobox, or just press enter, I do expected the combo to come back to "emptytext" property, because customtext its not allowed. Do i miss understood the property, is it valid for filtered combos, or Im missing something?
Third, I do live in a country (Brazil) that uses accents, like french. Is there a property to ignore accents in the filter? If not, I think its a good idea for the future.
All the best,