diff --git a/src/vs/editor/browser/widget/diffNavigator.ts b/src/vs/editor/browser/widget/diffNavigator.ts
index 051efeac72f0ab764a9ec3a398b37a761116a39e..795a77175b9694a1a81a0a6be31fca776bf10f3a 100644
--- a/src/vs/editor/browser/widget/diffNavigator.ts
+++ b/src/vs/editor/browser/widget/diffNavigator.ts
@@ -76,6 +76,7 @@ export class DiffNavigator {
 		if (this._options.alwaysRevealFirst) {
 			this._disposables.push(this._editor.getModifiedEditor().onDidChangeModel((e) => {
 				this.revealFirst = true;
+				console.log('diff model changed. revealFirst', this.revealFirst);
 			}));
 		}
 
@@ -94,12 +95,16 @@ export class DiffNavigator {
 		this._init();
 
 		this._compute(this._editor.getLineChanges());
+		console.log('_onDiffUpdated, revealFirst', this.revealFirst);
 		if (this.revealFirst) {
 			// Only reveal first on first non-null changes
 			if (this._editor.getLineChanges() !== null) {
 				this.revealFirst = false;
 				this.nextIdx = -1;
 				this.next(ScrollType.Immediate);
+				console.log('having line changes, going to next');
+			} else {
+				console.log('not having any line changes!');
 			}
 		}
 	}
@@ -169,8 +174,10 @@ export class DiffNavigator {
 
 	private _move(fwd: boolean, scrollType: ScrollType): void {
 		assert.ok(!this.disposed, 'Illegal State - diff navigator has been disposed');
+		console.log('_move');
 
 		if (!this.canNavigate()) {
+			console.log('!this.canNavigate()');
 			return;
 		}
 
@@ -193,6 +200,7 @@ export class DiffNavigator {
 		this.ignoreSelectionChange = true;
 		try {
 			let pos = info.range.getStartPosition();
+			console.log('setting new position: ', pos);
 			this._editor.setPosition(pos);
 			this._editor.revealPositionInCenter(pos, scrollType);
 		} finally {
diff --git a/src/vs/workbench/browser/parts/editor/textDiffEditor.ts b/src/vs/workbench/browser/parts/editor/textDiffEditor.ts
index 8dacac617d375b70aaef0f1c72f3645bdd25343b..6c3f9d87366646e97de16cab80e3ca8bca66e870 100644
--- a/src/vs/workbench/browser/parts/editor/textDiffEditor.ts
+++ b/src/vs/workbench/browser/parts/editor/textDiffEditor.ts
@@ -157,12 +157,17 @@ export class TextDiffEditor extends BaseTextEditor implements ITextDiffEditor {
 					optionsGotApplied = (<TextEditorOptions>options).apply(diffEditor, ScrollType.Immediate);
 				}
 
+				console.log('Diff Editor: setInput()');
+
 				// Otherwise restore View State
 				let hasPreviousViewState = false;
 				if (!optionsGotApplied) {
 					hasPreviousViewState = this.restoreTextDiffEditorViewState(input);
 				}
 
+				console.log('optionsGotApplied', optionsGotApplied);
+				console.log('hasPreviousViewState', hasPreviousViewState);
+
 				this.diffNavigator = new DiffNavigator(diffEditor, {
 					alwaysRevealFirst: !optionsGotApplied && !hasPreviousViewState // only reveal first change if we had no options or viewstate
 				});
@@ -204,6 +209,7 @@ export class TextDiffEditor extends BaseTextEditor implements ITextDiffEditor {
 			if (resource) {
 				const viewState = this.loadTextEditorViewState(resource);
 				if (viewState) {
+					console.log('restoring viewState', viewState);
 					this.getControl().restoreViewState(viewState);
 
 					return true;