Yes, this is sometimes the problem with blurred or noisy parts of the image. The trick is first, to separate the foreground from the background as precisely as possible using brushes before applying the algorithm.
If the first result is not satisfactory, you can make further corrections with the brush by switching between foreground and background selection option of the brush.
What I don’t like about implementation in GIMP is that after the initial implementation of the algorithm after each additional stroke of the brush, the calculation is starting to run again! In this way, this already very slow process is unnecessarily stretched even longer.
In some cases helps “Feather Selection” option in brush menu.
If the foreground selection is done and there are still artifacts, I copy the selection to the new layer and make manual corrections with the help of eraser tool with low hardness and opacity switching between “erase” and “un-erase” mode of the tool.
Please note: I have scaled the original image for the faster calculation speed of the engine for Video and shortened the waiting times of the calculation. Original video length was about 6 min.
Most likely the flatpak is missing that library. If you’re enterprising, diff the version from gimp’s repo with the version from the flathub repo. They were supposedly the same… If they’re still the same, file a bug with the gimp project. If they’re different, the issue is probably with flathub’s version
@ChameleonScales
Well, that issue is self-explanatory [if you have encountered it before ]
On Linux MInt 19 Tara: Menu | Administration | Synaptic Package Manager → Settings | Repositories. Under Source code, tick box to Enable source code repositories.