'Add Tab' button no longer functions after 7.5.1 upgrade.

Everything else seems to work, but I can no longer add new tabs to the homepage.

Hey Scott,

This has been previously logged on our Github as an issue: https://github.com/salesagility/SuiteCRM/issues/927

You can track its progress there. (or, if you want, make the change that Paul has supplied here)
However, This change may not be upgrade safe, so it will be overwritten by any upgrade packages that don’t contain this change.