Steps to Reproduce

1. open the background color dropdown in the toolbar
2. focus on the hex input
3. press the backspace key

Current Result

nothing deleted

Expected Result

delete 1 character

Debug Information

• it's handled by keikai doKey() but doesn't propagate to a browser

Workaround

var exWidget = {};
zk.override(zss.Spreadsheet.prototype, exWidget, {
/* zk default afterKeyDown() prevent default and make backspace not working. Because spreadsheet widget also listener the backspace */
afterKeyDown_: function(event){
if (event.domEvent.target.nodeName == 'INPUT')

exWidget.afterKeyDown_.apply(this, arguments);
},
});