I have two camera screens I use to manually switch between, my webcam and my desktop. Manycam is suddenly on a timer and automatically switching between screens, and the settings I saved for my desktop automatically change to my camera including the special effects (graphics). This has happened once before, but I can’t figure out how to fix it now.
You might be in the Playlist mode https://help.manycam.com/knowledge-base/manycam-video-playlist/
I have this same issue and checked that I don’t have playlists. I have five cameras and five scenes with different sets of cameras and they change which camera is in which box. This has happened regularly.