Sometimes I mirror my iPad Pro (first generation) screen to an external monitor via a USB-C to DisplayPort converter, and connect a bluetooth keyboard for typing. I noticed that DTTG seems to have some compatibility issues working under this setup.
There are two problems I’ve encountered sofar.
It seems as long as my iPad is connected to a monitor, in DTTG the share menu of the document pane stops working (red circle in the screenshot below). Clicking the share button won’t pop up share menu anymore. As soon as I unplugged the converter dongle, the share menu works again. I’ve tested some other apps including Safari and PDF Expert under the same setting they don’t manifest the same issue.
When DTTG is the active application, pressing
cmd + tabof external keyboard doesn’t trigger app switcher, as it does in other applications.