IN List operator , where list of values are over a number of lines

Hi

We have noticed a quirk in the IN list operator where the list of values are over several lines , but some have missing comma separators.
The command should fail, however it executes only returning certain values.

Create table, insert vales, show values , select using IN List
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First query  errors as expected , Second executes with out error! Returning A & F .
[cid:image002.png@01DC32EC.6DCD8B50]

Details of server .
[cid:image004.png@01DC32EC.D2ED7400]

Attached is the sql that I ran

Please investigate

Many Thanks Ian White
Member British Computer Society

[ncr corporation]
Oracle & Postgres Database Administrator & Perfomance Expert.
Based London
Ian.White@ncratleos.com