The Factbook entry for God's Love shows that this theme is present in 1 John 2:3-11, but right-clicking a word in verse 5 doesn't show that preaching theme in the context menu.

It does appear if I right-click a word in a verse that is tagged as one of the Key Passages
Is this how it is intended to work and, if so, was this changed at some point? Maybe at the same time the search for Preaching Themes was restricted to Key Passages.