Some corrections to lpxclient code

luprex/cpp/core/drivenengine.cpp

@@ -165,8 +165,8 @@ void DrivenEngine::set_console_prompt(const eng::string &prompt) {
     console_prompt_ = prompt;
 }
 
-void DrivenEngine::rescan_lua_source() {
-    rescan_lua_source_ = true;
+void DrivenEngine::rescan_lua_source(bool b) {
+    rescan_lua_source_ = b;
 }
 
 void DrivenEngine::set_visible_world_and_actor(World *w, int64_t id) {

luprex/cpp/core/drivenengine.hpp

@@ -222,7 +222,7 @@ public:
     // DRIVER: this merely sets a flag, which the driver will notice later,
     // causing the driver to update the lua source.
     //
-    void rescan_lua_source();
+    void rescan_lua_source(bool b);
 
     // Set the world pointer and the actor ID.
     //

luprex/cpp/core/eng-tests.cpp

@@ -108,7 +108,7 @@ public:
     RunUnitTests() {
         world_.reset(new World(WORLD_TYPE_MASTER));
         stop_driver();
-        rescan_lua_source();
+        rescan_lua_source(true);
     }
 
     virtual void event_access(AccessKind kind, int64_t place_id, std::string_view datapk, StreamBuffer *retpk) override {

luprex/cpp/core/lpxclient.cpp

@@ -50,6 +50,12 @@ public:
 
         // Reset the print channeler
         print_channeler_.reset();
+
+        // Do not trigger lua source loading.
+        rescan_lua_source(false);
+
+        // Clear any saved invocations
+        delayed_invocations_.clear();
     }
 
     void set_initial_state_standalone() {
@@ -72,7 +78,10 @@ public:
         print_channeler_.reset();
 
         // Trigger lua source loading.
-        rescan_lua_source();
+        rescan_lua_source(true);
+
+        // Clear any saved invocations
+        delayed_invocations_.clear();
     }
 
     // When the world is in synchronous mode, there's no
@@ -140,7 +149,7 @@ public:
     }
 
     virtual void do_cpl_command() override {
-        rescan_lua_source();
+        rescan_lua_source(true);
     }
 
     virtual void do_work_command() override {

luprex/cpp/core/lpxserver.cpp

@@ -58,7 +58,7 @@ public:
         set_visible_world_and_actor(master_.get(), admin_id_);
         
         // Trigger the loading of the lua source.
-        rescan_lua_source();
+        rescan_lua_source(true);
     }
 
     virtual void do_syntax_error(std::string_view error) override {
@@ -82,7 +82,7 @@ public:
     }
 
     virtual void do_cpl_command() override {
-        rescan_lua_source();
+        rescan_lua_source(true);
     }
 
     virtual void do_work_command() override {