Merge pull request #2402 from Tyriar/2401_dont_scroll

Don't execute move to cell when the user has scrolled up

src/browser/services/SelectionService.ts

@@ -664,7 +664,7 @@ export class SelectionService implements ISelectionService {
     this._removeMouseDownListeners();
 
     if (this.selectionText.length <= 1 && timeElapsed < ALT_CLICK_MOVE_CURSOR_TIME) {
-      if (event.altKey) {
+      if (event.altKey && this._bufferService.buffer.ybase === this._bufferService.buffer.ydisp) {
         const coordinates = this._mouseService.getCoords(
           event,
           this._element,