Can you attach your book in version 10.3, to help you solve your problem please?
To be honest, asking questioner to provide downgraded version is not good idea.
Because in many cases, the problem is version specific.
The answerer should have higher version of Tableau.
While agree about having a higher version, some of us work for companies that won't let us upgrade as frequently as Tableau does. I often can't help someone with a questions because I am not allowed to have the most current version on my machine.
I don't ask for a 'lower version' but I understand why some folks do. Everyone is just trying to be helpful.....
I completely understand that point and I don't want to discuss here, but my point is that.
workbook needs to be kept as questioner's version because problem/solution can be version specific in many cases.
I hope your PC/company allow you to install new version on you local knowing that you cannot publish new version to server.