more stable lookup position

platform/lang-impl/src/com/intellij/codeInsight/completion/CodeCompletionHandlerBase.java

@@ -199,7 +199,6 @@ public class CodeCompletionHandlerBase implements CodeInsightActionHandler {
 
     LookupImpl lookup = (LookupImpl)LookupManager.getInstance(editor.getProject()).createLookup(editor, LookupElement.EMPTY_ARRAY, "", LookupArranger.DEFAULT);
     if (editor.isOneLineMode()) {
-      lookup.setForceShowAsPopup(true);
       lookup.setCancelOnClickOutside(true);
       lookup.setCancelOnOtherWindowOpen(true);
       lookup.setResizable(false);

platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupImpl.java

@@ -550,13 +550,6 @@ public class LookupImpl extends LightweightHint implements Lookup, Disposable {
     return myLookupStartMarker.getStartOffset();
   }
 
-  @Override
-  protected void beforeShow() {
-    if (isRealPopup()) {
-      getComponent().setBorder(null);
-    }
-  }
-
   public void performGuardedChange(Runnable change) {
     assert !myChangeGuard;
     myChangeGuard = true;
@@ -648,6 +641,8 @@ public class LookupImpl extends LightweightHint implements Lookup, Disposable {
 
     if (ApplicationManager.getApplication().isUnitTestMode()) return;
 
+    getComponent().setBorder(null);
+
     Point p = calculatePosition();
     HintManagerImpl hintManager = HintManagerImpl.getInstanceImpl();
     hintManager.showEditorHint(this, myEditor, p, HintManagerImpl.HIDE_BY_ESCAPE | HintManagerImpl.UPDATE_BY_SCROLLING, 0, false);