Start export button does nothing on XWiki 15.10.10

The problem here is specifically with the filter that is specified in the example. It also triggers a warning from LiveData:

Error: Invalid choice: is not one of equals,less,greater,between,before,after,contains,startsWith,empty.

When you modify the filter that is displayed in the "Location" column (remove a character and add it again for example), the export works. I doubt that this is a regression, it seems much more likely that this never worked.