Hi,
Do you publish a list of browsers you have tested the latest version of QuickApps with? The Quick Start Guide has this statement…
Browser Although administrative tasks on SharePoint sites are optimized for Internet Explorer 8 or
later, Office SharePoint Server also provides rendering support for other browsers that are
commonly used. To ensure that you have complete access to all the functionality, we
recommend that you use Internet Explorer 8 or later for administrative tasks.
Thanks
Gary