Comment 2 for bug 1799430

I can confirm this
- except the freezing/non-responding on a fresh Ubuntu Installation.
I installed with 18.04 and upgraded to 18.10 afterwards.
The default dock (no dock extension in use) is visible and fully functional at the lock-screen.
The problem occurs not always, but - estimated - at over 50% of all lock-screens.

Full functional dock, e.g.:
- Execution of the Favorites/applications is possible
- Pre-view of application windows is possible