I have the 17.1-20200531-UNOFFICIAL-YumeMichi-onyx on my OnePlus X but the camera app installed on it is not the same as the screenshots on first page. The one I have is named "org.lineageos.snap (version 2.02.037) and don't have the slow-mo mode etc.
The new lineageos (lineage-17.1-20200724-UNOFFICIAL-YumeMichi-onyx) had the same cmaera app ? Is it interessing to upgrade my lineageos ?
Someone can share with me (on mega for example) the very last one build of YumeMichi lineageos for OnePOlus X ?
Had similar issues, sometimes stuck on selfie camera, and can't switch back.
Use open camera, seems to work better in many cases.