REPRODUCIBILITY (% or how often): random?
BUILD ID = OS VERSION (Settings > About product): 184.108.40.206
HARDWARE (Jolla1, Tablet, XA2,…): any
UI LANGUAGE: any
REGRESSION: (compared to previous public release: Yes, No, ?): yes
Trying to install the update from 220.127.116.11 to 18.104.22.168 via the System Settings, the update page warns the user about several packages, and says they must be removed to install the update.
I updated the Jolla 1 and Jolla Tablet, and both warned about different packages (despite mostly the same software being installed on both systems) - among them were things like libjpeg or opus. Another user even had it complain about gnupg2: [release notes] Pallas-Yllästunturi 3.4.0.
It seems there is some filter going havoc, because actually uninstalling some of these packages would cause a lot of trouble.
Despite the big warning, the pulley menu still allows the user to install the update, and it installs just fine.