using mouse wheel to adjust volume crashes indicator applet

Project:Trisquel
Version:8.0
Component:Gnome
Category:bug report
Priority:normal
Assigned:Unassigned
Status:active
Description

When I try to adjust volume by mousing over the sound indicator and using mouse wheel (or middle button + trackpoint in my case) all icons in the indicator applet disappear and I get

'"Indicator Applet Complete" has quit unexpectedly

If you reload a panel object, it will automatically be added back to the panel'

If I select 'Reload' the indicator applet returns.