Re-sharing an already present file removes it from the original channel on the client side

[WizardOfCodez]

Describe the bug
I downloaded a file from a third-party website and shared it in my own private channel. After that, the file disappears from all other channels it is shared in.

To Reproduce
Steps to reproduce the behavior:

1. Download a file from Surge
2. Remove it from seeding
3. Readd to Surge and seed in a different channel

Expected behavior
I expect it to be shown in other channels as well and marked as "downloaded/seeded"