Comment 3 for bug 1885362

OK, I have tried uninstalling all flatpak's in a virtual machine and then installing telegram and it's dependencies.

You can see the console output here https://pastebin.ubuntu.com/p/MGKhsQfnYN/ I would have expected it to use around 440MB download from the estimates given, but the network interface is reporting around 540MB used.

This is not as a dramatic increase such as yours, and I wonder if it is related to the way ostree fetches many files or something.

I would recommend opening a bug upstream here https://github.com/flatpak/flatpak/issues/ as this bug could be in flatpak or ostree or maybe somewhere else, then once there is feedback from upstream we can action this bug. (also feel free to link/copy info from my pastebin and this bug in the upstream bug).