It looks like UE-13673 is back open. It may have been re-opened as a regression or the fix did not make it into 4.9, though unfortunately I don’t have any additional information on why this is. I do not have a timeframe of when this will be addressed.
I believe what you are seeing must be a different issue. I just tested this in 4.14 and I couldn’t get your results. According to the JIRA this was fixed back in 4.13 and verified.
Could you create a new bug report and make sure to post full repro steps and/or a test project?