Steps to Reproduce

1. load attached zul with blank.xlsx
2. select "8%" on A1

Actual Result

"Validation Error" message shows up.
If you select "8 %" on B1, no error shows.

Initial Diagnosis

In DataValidationHelper.validateListOperation(), input is converted to a double, but validation list are all string. So validation fails.

Debug Information

Excel will keep double quote to keep the input text as a string. You can see listValidation-cellType.xlsx.