When RadCombobox is inside fixed div element and is expanded it doesn't scroll as expected. The dropdown container should stay fixed as the combo's input element.
If we dynamically remove highlighted item from a ComboBox at clientside, afterwards get_highlightedItem still returns that deleted item. ComboBox takes care of deleting selected item at like 497 of RadComboBox.js. Highlighted item should be taken care of too.
ComboBox keeps the dropdown aligned to either sides of input field. If due to content overflow e.g in a small frame input field is placed slightly out of viewport then it would be better to check the boundaries if ScreenBoundaryDetection is enabled and keep the dropdown in view and not necessarily aligned with input.
From customer feedback: Label display style is not taken into consideration when calculating the width of the combobox e.g. if the display style is block, the label and combo should be on separate lines. In terms they should be equally wide. However currently the combo is squashed to a minimum width.
This feedback item has been raised from this forum thread: http://www.telerik.com/community/forums/aspnet-ajax/combobox/enablecheckallitemscheckbox-all-entry-doesnt-fire-onitemchecked-event.aspx This issue was first raised back in Sep '11 as it was suggested that 'it was in the plan for a future release'. I've added this item here in the feedback portal to ensure that it's not got lost
Please check the attached images for more details.