fixed garbage in fullscreen mode

fixed breakpoints flickering in RomListWidget
fixed palette update in VideoAudioDialog

src/debugger/gui/RomListWidget.cxx

@@ -491,6 +491,8 @@ void RomListWidget::drawWidget(bool hilite)
                              checkBreakPoint(dlist[pos].address,
                              instance().debugger().cartDebug().getBank(dlist[pos].address)));
     myCheckList[i]->setDirty();
+    // draw immediately, because chain order is not deterministic
+    myCheckList[i]->draw();
 
     // Draw highlighted item in a frame
     if(_highlightedItem == pos)

src/gui/DialogContainer.cxx

@@ -122,6 +122,10 @@ void DialogContainer::render()
   if(myDialogStack.empty())
     return;
 
+  // Make sure we start in a clean state (with zero'ed buffers)
+  if(!myOSystem.eventHandler().inTIAMode())
+    myOSystem.frameBuffer().clear();
+
   cerr << "full re-render " << typeid(*this).name() << endl;
 
   // Make sure we start in a clean state (with zero'ed buffers)

src/gui/VideoAudioDialog.cxx

@@ -959,7 +959,16 @@ void VideoAudioDialog::handlePaletteUpdate()
   instance().frameBuffer().tiaSurface().paletteHandler().setAdjustables(paletteAdj);
 
   if(instance().hasConsole())
+  {
     instance().frameBuffer().tiaSurface().paletteHandler().setPalette();
+
+    constexpr int NUM_LUMA = 8;
+    constexpr int NUM_CHROMA = 16;
+
+    for(int idx = 0; idx < NUM_CHROMA; ++idx)
+      for(int lum = 0; lum < NUM_LUMA; ++lum)
+        myColor[idx][lum]->setDirty();
+  }
 }
 
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