I ran into an issue with flatpak version of Kdenlive that it would render only the topmost V track if it was a simple still image.
Preview worked fine.
Luckily, someone in Kdenlive’s Matrix suggested that I use an appimage. I used my distro’s version and the final render was fine.
Other than that I had positive experience with flatpaks in general.
Yeah, to reiterate what @[email protected] said,
syncthing
works flawlessly on any Android devices I have used.Maybe there’s something you missed on your phone’s setup?