Use line number instead of line index for proper scroll behavior

src/vs/editor/browser/viewParts/lineNumbers/lineNumbers.ts

@@ -135,7 +135,7 @@ export class LineNumbersOverlay extends DynamicViewOverlay {
 			let lineIndex = lineNumber - visibleStartLineNumber;
 
 			let renderLineNumber = this._getLineRenderLineNumber(lineNumber);
-			if (renderLineNumber && lineIndex % this._lineNumberInterval === 0) {
+			if (renderLineNumber && lineNumber % this._lineNumberInterval === 0) {
 				output[lineIndex] = (
 					common
 					+ renderLineNumber

src/vs/editor/common/config/editorOptions.ts

@@ -1991,7 +1991,6 @@ export class EditorLayoutProvider {
 		const showGlyphMargin = _opts.showGlyphMargin;
 		const lineHeight = _opts.lineHeight | 0;
 		const showLineNumbers = _opts.showLineNumbers;
-		const lineNumberInterval = _opts.lineNumberInterval;
 		const lineNumbersMinChars = _opts.lineNumbersMinChars | 0;
 		const lineNumbersDigitCount = _opts.lineNumbersDigitCount | 0;
 		const lineDecorationsWidth = _opts.lineDecorationsWidth | 0;