I didn’t know that. Learned something new.
I solved the issue by adding node_modules to my ignore patterns on my Android device. Within a few seconds, everything synced up properly. I didn’t have to restart the Android server. Though I should add, that files remained on the device, they just don’t sync anymore. I could delete them I guess. Finally I removed the .stignore I had created on my Ubuntu server since there is no issue with symlinks on it and I don’t have a problem with that folder syncing to other computers.
Hopefully I don’t run into any more conflicts / duplicates. Syncthing has been great!
Thanks for the help!