Set a player's threat to 0 (for display purposes) if the player's threat is less than 0. This occurs on Fade and Mirror Image, which gives the caster a temporary threat reduction of 410057408 (or 4.1m threat in Omen's terms). Previously Omen ignored players with negative threat.

Omen.lua

@@ -1289,7 +1289,9 @@ local function updatethreat(unitid, mobunitid)
 	local guid = UnitGUID(unitid)
 	if guid and not threatTable[guid] then
 		local isTanking, state, scaledPercent, rawPercent, threatValue = UnitDetailedThreatSituation(unitid, mobunitid)
-		threatTable[guid] = threatValue or -1
+		-- Threat can be negative due to temporary threat reduction effects such as Fade and Mirror Image.
+		-- So we cap the minimum threat to display at 0. We use the special value -1 to indicate nil here.
+		threatTable[guid] = (threatValue and (threatValue >= 0 and threatValue or 0)) or -1
 		if threatValue and threatValue > topthreat then topthreat = threatValue end
 		if isTanking then tankGUID = guid end
 	end
@@ -1442,7 +1444,7 @@ function Omen:UpdateBarsReal()
 	-- Sort the threatTable
 	local i = 1
 	for k, v in pairs(threatTable) do
-		if v >= 0 then
+		if v ~= -1 then
 			sortTable[i] = k
 			i = i + 1
 		end
@@ -1507,13 +1509,13 @@ function Omen:UpdateBarsReal()
 			-- Update the text on the bar
 			bar.Text1:SetText(guidNameLookup[guid])
 			if dbBar.ShowPercent and dbBar.ShowValue then
-				if dbBar.ShortNumbers and threat > 100000 then
+				if dbBar.ShortNumbers and threat >= 100000 then
 					bar.Text2:SetFormattedText("%2.1fk [%d%%]", threat / 100000, tankThreat == 0 and 0 or threat / tankThreat * 100)
 				else
 					bar.Text2:SetFormattedText("%d [%d%%]", threat / 100, tankThreat == 0 and 0 or threat / tankThreat * 100)
 				end
 			elseif dbBar.ShowValue then
-				if dbBar.ShortNumbers and threat > 100000 then
+				if dbBar.ShortNumbers and threat >= 100000 then
 					bar.Text2:SetFormattedText("%2.1fk", threat / 100000)
 				else
 					bar.Text2:SetFormattedText("%d", threat / 100)
@@ -1532,7 +1534,7 @@ function Omen:UpdateBarsReal()
 
 			-- Update the width of the bar, and animate if necessary
 			local width = w * threat / topthreat
-			if width == 0 then width = 1 end
+			if width <= 0 then width = 1 end
 			if dbBar.AnimateBars and self.Anchor.IsMovingOrSizing ~= 2 then
 				bar:AnimateTo(width)
 			else