Where possible (when the edit only affects one gloss), add language codes to edit summaries regarding glosses.
In other words,
/* add-sense:1||L3-S2 */ the second sense
needs to become
/* add-sense:1|en|L3-S2 */ the second sense
Note: some other message already include the language code, apparently, so I’m not sure how many messages remain that don’t have it.