It appears that the search function for a jqxComboBox with remoteAutoComplete enabled is not triggered when a key is pressed while the shift key is being held down.
This can be reproduced using the ComboBox Remote Search (city search) demo on the jqWidgets web site:
1. Type ‘be’ in the input field – list is populated with cities beginning with ‘Be’ (case is ignored)
2. Clear the content of the input field
3. Hold down the shift key and type ‘BE’ in the input field – *** The list box is not populated ***
4. Clear the content of the input field
5. Engage Caps Lock and type ‘BE’ (without holding the shift key) – list is populated as in step 1
Thus, it appears that the search does not occur if a key is pressed while the shift key is being held down.