KillerJK: Having to "disconnect" to get your games removed is... problematic. If an extension breaks and nobody fixes it, or the service completely disappears, you'll never be able to connect it, making it impossible to disconnect and remove your games. This is happening right now with the uplay plugin, for example.
Hey, you can fix the Ubisoft plugin and disconnect it properly:
Quit GOG Galaxy
Go to %LOCALAPPDATA%\GOG.com\Galaxy\plugins\installed\uplay_afb5a69c-b2ee-4d58-b916-f4cd75d4999a\
Open consts.py using Notepad
Replace line 15 with:
CLUB_APPID = "314d4fef-e568-454a-ae06-43e3bece12a6"
Replace line 16 with:
CLUB_GENOME_ID = "85c31714-0941-4876-a18d-2c7e9dce8d40"
Start GOG Galaxy
Reconnect Ubisoft
Disconnect Ubisoft
Hope that works for you as well as it did for me.