Thank you for your post.
I don't have FileMaker Server 13 immediately available to me, but under FileMaker Server 15, I am unable to replicate the issue. The following screen shots are for Microsoft Edge, Chrome Mac, and Chrome Windows.
At this time, there are no plans to revisit the FileMaker Server/Pro 13 code.
Thanks. It appears that they have fixed this issue in 15. Unfortunately, I don't have the option to migrate to 15 for this application. I'll figure out a workaround.
Thanks for that tip, Benjamin. I took your advice and posted the request.