diff --git a/AI/Skirmish/BARb b/AI/Skirmish/BARb
index e6b33037df..f4a6ca3ae0 160000
--- a/AI/Skirmish/BARb
+++ b/AI/Skirmish/BARb
@@ -1 +1 @@
-Subproject commit e6b33037dfbe81f2b0eb289f884ed90a1718eec0
+Subproject commit f4a6ca3ae096631894e194cfa9b4e8e53f4fb78c
diff --git a/rts/Game/UI/KeyBindings.cpp b/rts/Game/UI/KeyBindings.cpp
index 32c55dcfb6..b566ebb425 100644
--- a/rts/Game/UI/KeyBindings.cpp
+++ b/rts/Game/UI/KeyBindings.cpp
@@ -674,6 +674,11 @@ bool CKeyBindings::UnBind(const std::string& keystr, const std::string& command)
 	if (debugEnabled)
 		LOG("[CKeyBindings::%s] keystr=%s command=%s", __func__, keystr.c_str(), command.c_str());
 
+	/* Bind does the same to the stored chain, so mirror it
+	 * here or a stateful bind can never be named exactly. */
+	if (statefulCommands.find(command) != statefulCommands.end())
+		kc.back().SetAnyBit();
+
 	const CKeySet& ks = kc.back();
 	KeyMap& bindings = ks.IsKeyCode() ? codeBindings : scanBindings;
 	const auto it = bindings.find(ks);
@@ -681,7 +686,7 @@ bool CKeyBindings::UnBind(const std::string& keystr, const std::string& command)
 	if (it != bindings.end()) {
 		ActionList& al = it->second;
 
-		if (RemoveCommandFromList(al, command))
+		if (RemoveCommandFromList(al, kc, command))
 			buildHotkeyMap = true;
 
 		if (al.empty())
@@ -816,6 +821,23 @@ bool CKeyBindings::RemoveCommandFromList(ActionList& al, const std::string& comm
 }
 
 
+/* Chains are stored under their last keyset, so
+ * a bucket holds every chain ending in that key. */
+bool CKeyBindings::RemoveCommandFromList(ActionList& al, const CKeyChain& kc, const std::string& command)
+{
+	RECOIL_DETAILED_TRACY_ZONE;
+
+	const auto removedCount = std::erase_if(al, [&kc, &command] (const auto& x) {
+		/* exact compare, not .fit(): naming one modifier
+		 * combination must not remove a different one.
+		 * operator== also rejects differing chain lengths. */
+		return x.command == command && x.keyChain == kc;
+	});
+
+	return removedCount > 0;
+}
+
+
 void CKeyBindings::ConfigNotify(const std::string& key, const std::string& value)
 {
 	RECOIL_DETAILED_TRACY_ZONE;
diff --git a/rts/Game/UI/KeyBindings.h b/rts/Game/UI/KeyBindings.h
index 9caf37e610..94f163af6e 100644
--- a/rts/Game/UI/KeyBindings.h
+++ b/rts/Game/UI/KeyBindings.h
@@ -79,6 +79,7 @@ class CKeyBindings : public CommandReceiver
 		bool AddKeySymbol(const std::string& keysym, const std::string& code);
 
 		static bool RemoveCommandFromList(ActionList& al, const std::string& command);
+		static bool RemoveCommandFromList(ActionList& al, const CKeyChain& kc, const std::string& command);
 
 		bool FileSave(FILE* file) const;
 
diff --git a/rts/Sim/MoveTypes/MoveDefHandler.cpp b/rts/Sim/MoveTypes/MoveDefHandler.cpp
index eb59743c08..0b350377af 100644
--- a/rts/Sim/MoveTypes/MoveDefHandler.cpp
+++ b/rts/Sim/MoveTypes/MoveDefHandler.cpp
@@ -51,7 +51,7 @@ CR_REG_METADATA(MoveDef, (
 
 	CR_MEMBER(followGround),
 	CR_MEMBER(isSubmarine),
-	CR_MEMBER(isSubmersible),
+	CR_MEMBER(hasUnderwaterCollision),
 
 	CR_MEMBER(overrideUnitWaterline),
 
@@ -343,7 +343,7 @@ MoveDef::MoveDef(const LuaTable& moveDefTable): MoveDef() {
 	}
 
 	height = std::max(1, moveDefTable.GetInt("height", defaultHeight));
-	isSubmersible = (isSubmarine || (followGround && depth > height));
+	hasUnderwaterCollision = (isSubmarine || (followGround && depth > height) || (waterline > 0 && maxWaterDepth > waterline));
 	allowDirectionalPathing = moveDefTable.GetBool("allowDirectionalPathing", allowDirectionalPathing);
 	preferShortestPath = moveDefTable.GetBool("preferShortestPath", preferShortestPath);
 }
diff --git a/rts/Sim/MoveTypes/MoveDefHandler.h b/rts/Sim/MoveTypes/MoveDefHandler.h
index 9c8d1db560..13bacb00a8 100644
--- a/rts/Sim/MoveTypes/MoveDefHandler.h
+++ b/rts/Sim/MoveTypes/MoveDefHandler.h
@@ -106,7 +106,7 @@ struct MoveDef {
 	unsigned int CalcCheckSum() const;
 
 	bool IsComplexSubmersible() const {
-		return isSubmersible && overrideUnitWaterline;
+		return hasUnderwaterCollision && overrideUnitWaterline;
 	};
 
 	static float GetDefaultMinWaterDepth() { return -1e6f; }
@@ -183,8 +183,8 @@ struct MoveDef {
 	/// are we supposed to be a purely sub-surface ship?
 	bool isSubmarine = false;
 
-	// can this unit completely submerge in water?
-	bool isSubmersible = false;
+	// can this unit at least partially submerge in water?
+	bool hasUnderwaterCollision = false;
 
 	/// If false, this forces the use of simple underwater collisions, which can cause some pathing issues for
 	/// amphibious units. i.e. they are blocked by obstacles above and below the water regardless of height.