Try to prevent host<->UIs parameter changes feedback-loop

source/backend/plugin/CarlaPlugin.cpp

@@ -1278,7 +1278,11 @@ void CarlaPlugin::setParameterValueByRealIndex(const int32_t rindex, const float
     for (uint32_t i=0; i < kData->param.count; ++i)
     {
         if (kData->param.data[i].rindex == rindex)
-            return setParameterValue(i, value, sendGui, sendOsc, sendCallback);
+        {
+            if (getParameterValue(i) != value)
+                setParameterValue(i, value, sendGui, sendOsc, sendCallback);
+            break;
+        }
     }
 }
 

source/backend/plugin/Lv2Plugin.cpp

@@ -3411,7 +3411,11 @@ protected:
             for (uint32_t i=0; i < kData->param.count; ++i)
             {
                 if (kData->param.data[i].rindex == static_cast<int32_t>(rindex))
-                    return setParameterValue(i, value, false, true, true);
+                {
+                    if (fParamBuffers[i] != value)
+                        setParameterValue(i, value, false, true, true);
+                    break;
+                }
             }
         }
         else if (format == CARLA_URI_MAP_ID_ATOM_TRANSFER_ATOM)