G2CONF="${G2CONF} $(use_enable debug) --disable-static" Nope, you can't do that in global scope, mate. Also please don't intersperse variables (DOCS) with functions, this makes ebuilds terribly hard to read.
Fixed in commit 261b9a371d6aa9fd548f8affe5d080a762ca9fb6. Thanks for the report.
Still/again in caja-dropbox-1.10.1.ebuild.
Looks like the project repo wasn't updated when the bug was originally fixed. Fixed 1.10 in 0dfabaec0a2bb3f4ee70beb32f3ac7458f546e17