Cav 3

Repeat test from Cav 1 and Cav 2
Cav Text::&
 * Declare value
 * Square brackets are in html)


 * Ask

Has Summary::f
 * Embed

Conclusion
This bug appears to have been fixed in SMW 1.8 alpha. Either it was present in SMW 1.8, the official version, or the database upgrade (in my case) did not succeed in its entirety.