Remove suggest input transparency to fix #85099

src/vs/workbench/contrib/codeEditor/browser/suggestEnabledInput/suggestEnabledInput.css

@@ -10,8 +10,6 @@
 .suggest-input-container .monaco-editor-background,
 .suggest-input-container .monaco-editor,
 .suggest-input-container .mtk1 {
-	/* allow the embedded monaco to be styled from the outer context */
-	background-color: transparent;
 	color: inherit;
 }
 
@@ -25,4 +23,3 @@
 	margin-top: 2px;
 	margin-left: 1px;
 }
-

src/vs/workbench/contrib/codeEditor/browser/suggestEnabledInput/suggestEnabledInput.ts

@@ -224,7 +224,8 @@ export class SuggestEnabledInput extends Widget implements IThemable {
 
 
 	public style(colors: ISuggestEnabledInputStyles): void {
-		this.stylingContainer.style.backgroundColor = colors.inputBackground ? colors.inputBackground.toString() : '';
+		this.placeholderText.style.backgroundColor =
+			this.stylingContainer.style.backgroundColor = colors.inputBackground ? colors.inputBackground.toString() : '';
 		this.stylingContainer.style.color = colors.inputForeground ? colors.inputForeground.toString() : null;
 		this.placeholderText.style.color = colors.inputPlaceholderForeground ? colors.inputPlaceholderForeground.toString() : null;
 
@@ -254,7 +255,7 @@ export class SuggestEnabledInput extends Widget implements IThemable {
 
 	public layout(dimension: Dimension): void {
 		this.inputWidget.layout(dimension);
-		this.placeholderText.style.width = `${dimension.width}px`;
+		this.placeholderText.style.width = `${dimension.width - 2}px`;
 	}
 
 	private selectAll(): void {
@@ -286,6 +287,12 @@ registerThemingParticipant((theme, collector) => {
 	if (inputForegroundColor) {
 		collector.addRule(`.suggest-input-container .monaco-editor .view-line span.inline-selected-text { color: ${inputForegroundColor}; }`);
 	}
+
+	const backgroundColor = theme.getColor(inputBackground);
+	if (backgroundColor) {
+		collector.addRule(`.suggest-input-container .monaco-editor-background { background-color: ${backgroundColor}; } `);
+		collector.addRule(`.suggest-input-container .monaco-editor { background-color: ${backgroundColor}; } `);
+	}
 });