We use a trivial Text App which includes several URLs, each of which includes requester email placeholder. This has always worked perfectly, but for the past few days (since early Nov 1?) this placeholder frequently (usually?) returns "undefined" until the Apps panel is reloaded. Sometimes several Apps reloads are required.
Perhaps related to this?: https://support.zendesk.com/entries/22311497-bug-in-event-listener-on-zendesk-framework