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This may also bring up an "extended visual function" question as to highlighting... though my suggestion may not be something the dev team would want to tackle this late in the L4 game.
Here goes. Hey visual interface persons.

In the right panel in the English text (top right) the words "to abstain from" are auto highlighted when selecting "abstain" with a single mouse click. With that one mouse click, in the bottom right interlinear pane the same set "to abstain from" auto selects.
Now in the left panel I select the lemma from the circle chart ... visual consistency (though the specific mouse click trigger is missing) would dictate that in each verse listed the equivalent English phrase (from the right panels) should be highlighted and not just the sole word "abstain".
I understand the lemma is being displayed but the lemma without its context doesn't really mean "abstain" anymore than it means "refrain" or "away from". I know I may be taking this a bit too far...and this example is a verb so it sort of suits it better than trying to make the same argument with a noun. But you could argue this for adjectives...an example like "of the flesh" = σαρκικῶν | lemma=sarkikos.
Anyway, it's just a though on my preference of visual communication.
Blah blah blah.. [:P]