Google comes up with about 4.05 million search results (see note below), of which the following accounts for the vast majority of this:
- context sensitive help 1.34m
- context sensitive menu 800K
- context sensitive line 578K
- context sensitive design 164K
- context sensitive grammar 136K
- context sensitive language 109K
- context sensitive information 101K
- context sensitive user interface 95K
- context sensitive spell/spelling 80K
- context sensitive manner 73K
- context sensitive button 64K
- context sensitive text 56K
- context sensitive learning 55K
- context sensitive half-time or half life (medical) 50K
- context sensitive area 48K
- context sensitive linking 44K
- context sensitive solution 23K
- context sensitive reference 22K
- context sensitive query 14K
- context sensitive stuff 11K
- context sensitive retrieval 10K
- context sensitive street design 6K
- context sensitive cr*p 114
- context sensitive sh*t 53
The majority of the rest is taken up by use with conjunctions and other mid, or end-of-sentence formulations, for example:
- ... context sensitive and ... - 600K
- ... context sensitive. The ... - 115K
- ... context sensitive, but ... - 58K
I have not investigated these further.
Conclusion
A very high proportion of these references are in relation to user interfaces, help, menus, buttons, computer related linguistics and translations, so I'm inclined to say that it is not very common at all outside the computer science realm, and extremely limited indeed outside of any technical scope.
Note
The overall estimated number of uses of the term "context sensitive" is noted as being less than the sum of the parts. And this doesn't even include the significant smattering (i.e. the long tail) of other terms that I've not listed eg: context sensitive... item - part - type - device, etc etc.
Google gives us an explanation of the total result numbers that it really is an estimate and also removes duplicates. However, I believe the above conclusion still stands in relation to the terms themselves, their relative frequency, and their areas of use;