Bluring from FilteringSelect not trigger required condition

[guest]

If you set a FilteringSelect? field (and probably ComboBox?) to required:true it doesn't always behave as it should. The following steps will result in the field not highlighting when the field is empty.

1. Select/Enter? some text
2. Erase the text (the popup will appear)
3. Blur away (click off the field)
4. Field will not highlight as it should

Note: If you now click on the field and blur off it will highlight. The problem is related to the fact that the contents were just erased and doing so caused the popup to appear. (autocomplete is on)

[guest]

This bug should be closed. The error was caused by an exception that occurred in my code in my onChange function which was attempting to look for an empty string in the store because .getValue() returns "" when nothing is selected.