The integration to attach Drive files to tasks (which seems to be via Filestack, not Sunsama) has no search function and incorrectly displays Drive contents/does not show all Drive files. Furthermore, attempting to attach files/click the interface often results in errors. This is via the WebUI.

Recommendation: create a Drive browser/attachment that is at least as good as the one in Trello/Asana/Google. Consider using the native Drive browser instead of Filestack?