A New One On Me

A new one on me !
Started my rebuilt Vega today - all good but after a few restarts the kickstart stopped engaging
It felt like the circlip had popped off so I removed the chaincase for a look and hey presto the top steel and plate were loose but here's the rub
The circlip was still in place and hadn't moved !
Also I had not used the clutch as I'm yet to connect the cable
Any ideas ?
Obviously I could just reassemble the clutch but would like to solve the issue so I doesn't happen again
Started my rebuilt Vega today - all good but after a few restarts the kickstart stopped engaging
It felt like the circlip had popped off so I removed the chaincase for a look and hey presto the top steel and plate were loose but here's the rub
The circlip was still in place and hadn't moved !
Also I had not used the clutch as I'm yet to connect the cable
Any ideas ?
Obviously I could just reassemble the clutch but would like to solve the issue so I doesn't happen again