Thanks for the report! Are any enemy ships deployed? This looks like the sort of thing you might see if the other fleet had an Omen or two deployed, or something else with the ECM hullmod.
Edit: ah, I think I get it - the issue is it's not showing enemy ECM for some reason, hmm.
Edit 2: what's going on is it's not showing the enemy ECM because while the enemy total is >0, the penalty for the player is 0, and it was showing (or not) based on that. Changed it to show if either of the enemy total or the player penalty is >0.