diff --git a/src/vs/editor/browser/config/configuration.ts b/src/vs/editor/browser/config/configuration.ts
index 560e591a878..f4175c0bf63 100644
--- a/src/vs/editor/browser/config/configuration.ts
+++ b/src/vs/editor/browser/config/configuration.ts
@@ -314,7 +314,6 @@ export class Configuration extends CommonEditorConfiguration {
 	}
 
 	private readonly _elementSizeObserver: ElementSizeObserver;
-	private _reservedHeight: number = 0;
 
 	constructor(
 		isSimpleWidget: boolean,
@@ -366,7 +365,7 @@ export class Configuration extends CommonEditorConfiguration {
 		return {
 			extraEditorClassName: Configuration._getExtraEditorClassName(),
 			outerWidth: this._elementSizeObserver.getWidth(),
-			outerHeight: this._elementSizeObserver.getHeight() - this._reservedHeight,
+			outerHeight: this._elementSizeObserver.getHeight(),
 			emptySelectionClipboard: browser.isWebKit || browser.isFirefox,
 			pixelRatio: browser.getPixelRatio(),
 			zoomLevel: browser.getZoomLevel(),
@@ -381,9 +380,4 @@ export class Configuration extends CommonEditorConfiguration {
 	protected readConfiguration(bareFontInfo: BareFontInfo): FontInfo {
 		return CSSBasedConfiguration.INSTANCE.readConfiguration(bareFontInfo);
 	}
-
-	public reserveHeight(height: number) {
-		this._reservedHeight = height;
-		this._recomputeOptions();
-	}
 }
diff --git a/src/vs/editor/common/config/commonEditorConfig.ts b/src/vs/editor/common/config/commonEditorConfig.ts
index b874b8a70f8..cbb3314229e 100644
--- a/src/vs/editor/common/config/commonEditorConfig.ts
+++ b/src/vs/editor/common/config/commonEditorConfig.ts
@@ -313,6 +313,7 @@ export abstract class CommonEditorConfiguration extends Disposable implements IC
 	private _rawOptions: IEditorOptions;
 	private _readOptions: RawEditorOptions;
 	protected _validatedOptions: ValidatedEditorOptions;
+	private _reservedHeight: number = 0;
 
 	constructor(isSimpleWidget: boolean, _options: Readonly<IEditorOptions>) {
 		super();
@@ -367,7 +368,7 @@ export abstract class CommonEditorConfiguration extends Disposable implements IC
 		const env: IEnvironmentalOptions = {
 			memory: this._computeOptionsMemory,
 			outerWidth: partialEnv.outerWidth,
-			outerHeight: partialEnv.outerHeight,
+			outerHeight: partialEnv.outerHeight - this._reservedHeight,
 			fontInfo: this.readConfiguration(bareFontInfo),
 			extraEditorClassName: partialEnv.extraEditorClassName,
 			isDominatedByLongLines: this._isDominatedByLongLines,
@@ -458,7 +459,10 @@ export abstract class CommonEditorConfiguration extends Disposable implements IC
 
 	protected abstract readConfiguration(styling: BareFontInfo): FontInfo;
 
-	public abstract reserveHeight(height: number): void;
+	public reserveHeight(height: number) {
+		this._reservedHeight = height;
+		this._recomputeOptions();
+	}
 }
 
 export const editorConfigurationBaseNode = Object.freeze<IConfigurationNode>({
diff --git a/src/vs/editor/test/common/mocks/testConfiguration.ts b/src/vs/editor/test/common/mocks/testConfiguration.ts
index 044fcae5ac0..ec94f2201ce 100644
--- a/src/vs/editor/test/common/mocks/testConfiguration.ts
+++ b/src/vs/editor/test/common/mocks/testConfiguration.ts
@@ -47,8 +47,4 @@ export class TestConfiguration extends CommonEditorConfiguration {
 			maxDigitWidth: 10,
 		}, true);
 	}
-
-	public reserveHeight(height: number): void {
-		throw new Error('Not supported');
-	}
 }