This article lists the known compatibility issues that you may encounter when running InDesign CC on macOS 10.14 (Mojave).
When you enable the Dark appearance theme of macOS using System Preferences > General, the theme is not applied on the following InDesign File menu dialogs that perform input and output operations. Instead, these dialogs are displayed in the Light theme.
When you launch InDesign, GPU Sniffer is docked in the dockbar along with InDesign. macOS considers it as a stand-alone application and displays separate icon for it in the dockbar.
As a workaround, follow the steps below: