diff --git a/.luacheckrc b/.luacheckrc
index 07ba718..7dc9d50 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -19568,5 +19568,5 @@ globals = {
 	"WA_UpdateNineSliceBorders", "SecondsToMinutes", "MinutesToSeconds", "HasTimePassed",
 	"SecondsFormatterConstants", "ConvertSecondsToUnits", "SecondsToClock",
 	"MinutesToTime", "FormatShortDate", "NUMBER_ABBREVIATION_DATA", "WeakAurasProfilingReportTitleText",
-	"WeakAurasRealTimeProfiling", "WeakAurasRealTimeProfilingTitleText", "seconds"
+	"WeakAurasRealTimeProfiling", "WeakAurasRealTimeProfilingTitleText", "seconds", "NUM_CHAT_WINDOWS"
 }
diff --git a/WeakAuras/Compatibility.lua b/WeakAuras/Compatibility.lua
index 01282c6..c283052 100644
--- a/WeakAuras/Compatibility.lua
+++ b/WeakAuras/Compatibility.lua
@@ -157,3 +157,13 @@ end
 function FrameDeltaLerp(startValue, endValue, amount, elapsed)
 	return DeltaLerp(startValue, endValue, amount, elapsed);
 end
+
+-- Fix FrameStrata of ChatFrame
+for i = 1, NUM_CHAT_WINDOWS do
+	local chatFrame = _G["ChatFrame" .. i]
+	if chatFrame and type(chatFrame.GetFrameStrata) == "function" and type(chatFrame.SetFrameStrata) == "function" then
+		if chatFrame:GetFrameStrata() == "BACKGROUND" then
+			chatFrame:SetFrameStrata("MEDIUM")
+		end
+	end
+end