On the sidebar instant app, if the "Accordion panel" was turned on, the pop up panel will not follow map pop up settings, like the title of the popup. Also, for a map will multiple related tables, if the user click the details of the related record, then go back, only the current related records will show up, all others will disappear. Works ok when the "Accordion panel" was off.
Accordion panel on:

Accordion panel off:
