Yes, that is correct. I have been using the timer capturing mode for the past year. The app appeared to drop the camera settings that were already loaded in it several months ago which was giving me fits and not letting the drone take off as you said because the checklist would never complete. Took me awhile to figure out I had load in the Sequoia settings in again.
The current issue I’m having is the checklist will complete and allow me to start the mission, but the drone won’t immediately go to the mission start point after takeoff. When I start a mission with the Sequoia onboard and the timer mode running on the Sequoia, and the custom camera settings defined in the app, the drone takes off and goes to the selected flight altitude and hovers for 60 seconds each time over the takeoff point. It’s like the mission wasn’t actually fully loaded or something else. It ends up using about 7-10% of the battery just hovering each time.
This only happens when using the Sequoia mounted onboard and the app is in custom camera settings. When using the P3P camera and the associated setting in the app, the drone gets to altitude and immediately goes to the start of the mission.