please attach a test case.

Created an attachment (id=8315) [details]
Simply "testcase" for annoying bug

Same here. 

Most annoying is, if you tried to edit some larger text (like in a Wiki), by pasting a complete paragraph and that ends up at the wrong place because of the "jump back to top" effect.

CVS commit by coolo: 

restore scrolling position in case of a change in textareas and do not trigger 
the update code more often than necessary
BUG: 93193


  M +5 -0      ChangeLog   1.335
  M +4 -1      rendering/render_form.cpp   1.282


--- kdelibs/khtml/ChangeLog  #1.334:1.335
@@ -1,2 +1,7 @@
+2004-11-19  Stephan Kulow  <coolo@kde.org>
+
+        * rendering/render_form.cpp (updateFromElement): restore scrolling position in case of a change
+        in text and do not trigger the update code more often than necessary
+
 2004-11-17  Allan Sandfeld Jensen <kde@carewolf.com>
 

--- kdelibs/khtml/rendering/render_form.cpp  #1.281:1.282
@@ -1631,11 +1631,14 @@ void RenderTextArea::updateFromElement()
     w->setReadOnly(element()->readOnly());
     QString elementText = element()->value().string();
-    if ( elementText != text() )
+    if ( elementText != w->text() )
     {
         w->blockSignals(true);
         int line, col;
         w->getCursorPosition( &line, &col );
+        int cx = w->contentsX();
+        int cy = w->contentsY();
         w->setText( elementText );
         w->setCursorPosition( line, col );
+        w->scrollBy( cx, cy );
         w->blockSignals(false);
     }