Exceptions happened during retrieving values from ValueVector are not being displayed at the Drill Web UI

Data:
A text file with the following content:

Id,col1,col2
1,aaa,bbb
2,ccc,ddd
3,eee
4,fff,ggg

Note that the record with id 3 has not value for the third column.

exec.storage.enable_v3_text_reader should be false.

Submit the query from the Web UI:

select * from table(dfs.tmp.`/drill/text/test`(type=>'text',lineDelimiter=>'\n',fieldDelimiter=>',',extractHeader=>true))

Expected result:
Exception should happen due to DRILL-4814. It should be properly displayed.

Actual result:
Incorrect data is returned but without error. Query status: success.