Gnome Shell Extensions Disabled at Login Bug

This is a known bug without an owner, this is a workaround relatively simple to implement.


Login as normal

Run a terminal

$ gsettings get org.gnome.shell enabled-extensions
@as []

@as[] is you're likely output if you are experiencing this bug

open gnome-tweak-tool

enable any extensions you want

back to terminal

$ gsettings get org.gnome.shell enabled-extensions

this time it will have a list of something like

['AdvancedVolumeMixer@harry.karvonen.gmail.com', 'force-quit@alvin.mitesdesign', 'GPaste@gnome-shell-extensions.gnome.org', 'SkypeNotification@chrisss404.gmail.com', 'system-monitor@paradoxxx.zero.gmail.com']

• run gsettings
• click Add
• Any name will do

• gsettings set org.gnome.shell enabled-extensions "[__OUTPUT_LIST FROM ABOVE__]"

• Include the double quote " and the brackets []
• Click Add 

Close and done.

You can follow progress of this bug on Launchpad
Thank you to Llyo for posting this solution, it was difficult to follow if not familiar.