This Gnome shell extension (with the Dash to Dock extension) is for me what makes the Gnome shell tolerable as a replacement for Unity. Unfortunately, this extension (as well as others, including Dash to Dock) crashed on version 3.32 of the Gnome shell due to internal changes that were incompatible with the back-shell.
Some plugins have already released new versions or have patches in their main branches. But the manager of Workspaces to Dock said he no longer had the time to update the extension and that he was looking for a replacement. This means that it is not unlikely that no corrected version will be available when 19.04 is released.
What do others think of this situation? Does the fact that there is a package wrapping the Ubuntu extension mean that someone will intervene? Or does it all come down to a volunteer who is ready to take care of the maintenance of the extension?
Personally, I think it's a problem inherent to Gnome. The bare shell itself is a usability nightmare with no number of extensions (such as workspaces to dock, Dash to dock, and since Nautilus no longer supports desktop icons or desktop extension) , should be considered as hobby projects.