Merge pull request #106873 from belcherj/patch-1

Fix composition logic for Firefox

src/vs/editor/browser/controller/textAreaInput.ts

@@ -297,7 +297,7 @@ export class TextAreaInput extends Disposable {
 
 			// Due to isEdgeOrIE (where the textarea was not cleared initially) and isChrome (the textarea is not updated correctly when composition ends)
 			// we cannot assume the text at the end consists only of the composited text
-			if (browser.isEdge || browser.isChrome) {
+			if (browser.isEdge || browser.isChrome|| browser.isFirefox) {
 				this._textAreaState = TextAreaState.readFromTextArea(this._textArea);
 			}