Description
On occasions, when using an external keyboard, you will find that when you press on Control+Option+SpaceBar the Context menu will be triggered rather than the item VoiceOver focus is on at the time being activated.
This doesn't happen often, but frequently enough to be an irritation and to indicate that there is an underlying issue.
It also doesn't appear to be widespread in terms of where it can be encountered, but has been seen on Home screen icons, in the mail app, and in RSS and Twitter apps.
There appears to be no pattern to the behaviour... it just randomly happens.