diff --git a/engine/MUNGA_L4/L4GLASSWIN.cpp b/engine/MUNGA_L4/L4GLASSWIN.cpp
index de29d73..dd3e660 100644
--- a/engine/MUNGA_L4/L4GLASSWIN.cpp
+++ b/engine/MUNGA_L4/L4GLASSWIN.cpp
@@ -1768,6 +1768,14 @@ static LRESULT CALLBACK
 				}
 				else
 				{
+					// #166: a press must never ORPHAN a previous one -- if a
+					// prior button is still logically down (capture stolen by
+					// an overlay/popup so its WM_LBUTTONUP never arrived),
+					// release it before pressing the new one.  An orphaned
+					// press on the ammo-EJECT panel button is a permanent
+					// weapon jam (bin parked at Ejecting).
+					if (pressedAddress >= 0 && pressedAddress != a)
+						PadRIO::SetScreenButton(pressedAddress, 0);
 					pressedAddress = a;
 					SetCapture(window);
 					PadRIO::SetScreenButton(a, 1);
@@ -1787,6 +1795,21 @@ static LRESULT CALLBACK
 		}
 		return 0;
 
+	case WM_CAPTURECHANGED:
+		// #166: mouse capture stolen mid-press (Steam overlay, popups, focus
+		// change) -- WM_LBUTTONUP will never arrive, so release the held
+		// button NOW instead of leaving its control (e.g. ammo EJECT) pressed
+		// forever from the game's point of view.
+		if (pressedAddress >= 0)
+		{
+			DEBUG_STREAM << "[glasswin] capture LOST with button 0x" << std::hex
+				<< pressedAddress << std::dec << " down -- releasing\n" << std::flush;
+			PadRIO::SetScreenButton(pressedAddress, 0);
+			pressedAddress = -1;
+			InvalidateRect(window, NULL, FALSE);
+		}
+		return 0;
+
 	case WM_RBUTTONDOWN:
 		if (w != NULL)
 		{
diff --git a/game/reconstructed/projweap.cpp b/game/reconstructed/projweap.cpp
index d3a98c7..d8249df 100644
--- a/game/reconstructed/projweap.cpp
+++ b/game/reconstructed/projweap.cpp
@@ -579,6 +579,18 @@ void
 
 	AmmoBin *bin = (AmmoBin*)ammoBinLink.Resolve();			// FUN_00417ab4(this+0x43c)
 
+	// #166 forensics (ALWAYS on -- ejects are rare): every entry, with the
+	// state that decides which branch runs.  Oracle's field jam (bin parked
+	// at Ejecting(3), rounds aboard, countdown dead) can only come from a
+	// press/release sequence this line will capture -- the prime suspect is
+	// a press whose bin-resolve fails falling through to the release block.
+	DEBUG_STREAM << "[weap] " << GetName() << " EJECT msg data=" << message->dataContents
+		<< " bin=" << (void *)bin
+		<< " ejectState=" << ejectState
+		<< " binState=" << (bin != 0 ? bin->GetAmmoState() : -1)
+		<< " rounds=" << (bin != 0 ? bin->GetAmmoCount() : -1)
+		<< "\n" << std::flush;
+
 	if (message->dataContents > 0 && bin != 0)				// PRESS @4bb9d0/4bb9e9
 	{
 		bin->SetAmmoState(AmmoBin::Ejecting);				// SetLevel(bin+0x194, 3)