"Add earlier activity" dialog no longer shows up from Shell extension

Created by: Forage

With the 3.0-beta, clicking on the "Add earlier activity" menu entry from the GNOME Shell extension no longer makes the dialog pop up. Other entries like the overview and settings work as expected.

An intermediate build on 30 October worked as expected. Calling the same dialog from the overview dialog works as well.

Is there any way I can have a Shell extension provide me with log messages? Could this be another case of some outdated/duplicate files lingering somewhere due to file/folder name changes?