diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9e25d7..dffc7f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to OctoLatency are documented in this file.
 
 ## [Unreleased]
 
+## [1.2]
+### Fixed
+- Drag could get permanently stuck following the cursor: `OnMouseUp` only fires while the mouse is still over the frame at the instant the button is released, which a quick flick of this small (90x24) frame easily misses. `OnUpdate` now polls `IsMouseButtonDown("LeftButton")` every frame and stops the drag as soon as the button is released, regardless of where the cursor ends up.
+
 ## [1.1]
 ### Added
 - `/octolat copyerrors`, opening a copy-errors window: a multi-line `EditBox` pre-filled with the error log and auto-highlighted, so the text can be selected and copied with Ctrl+C (vanilla WoW's chat frame doesn't support text selection).
diff --git a/OctoLatency.lua b/OctoLatency.lua
index 7e8d489..22fa161 100644
--- a/OctoLatency.lua
+++ b/OctoLatency.lua
@@ -94,6 +94,15 @@ local function OctoLatency_UpdateText()
 end
 
 function OctoLatency_OnUpdate(elapsed)
+	-- OnMouseUp only fires while the cursor is still over the frame at
+	-- release, which a quick flick of this small frame easily misses,
+	-- leaving it stuck following the cursor forever. Poll the actual
+	-- button state every frame so it lets go regardless of where the
+	-- mouse ends up.
+	if (this.isMoving and not IsMouseButtonDown("LeftButton")) then
+		OctoLatency_StopMoving(this)
+	end
+
 	elapsedTimer = elapsedTimer + elapsed
 	if (elapsedTimer < UPDATE_INTERVAL) then
 		return
diff --git a/OctoLatency.toc b/OctoLatency.toc
index 0b8c2d8..d9bd858 100644
--- a/OctoLatency.toc
+++ b/OctoLatency.toc
@@ -2,7 +2,7 @@
 ## Title: |cff003c00O|cff005000c|cff006300t|cff007700o|cff008a00L|cff009e00a|cff00b100t|cff00c500e|cff00d800n|cff00ec00c|cff00ff00y|r
 ## Notes: Lightweight latency monitor with color-coding for Vanilla WoW (1.12.1)
 ## Author: Palladinpala
-## Version: 1.1
+## Version: 1.2
 ## SavedVariables: OctoLatencyDB
 
 OctoLatency.xml