diff --git a/src/browser/Decorations/OverviewRulerRenderer.ts b/src/browser/Decorations/OverviewRulerRenderer.ts
index 824f27ef6..d497b14b7 100644
--- a/src/browser/Decorations/OverviewRulerRenderer.ts
+++ b/src/browser/Decorations/OverviewRulerRenderer.ts
@@ -89,11 +89,10 @@ export class OverviewRulerRenderer extends Disposable {
     this._ctx.lineWidth = 1;
     this._ctx.fillStyle = decoration.overviewRulerOptions?.color || decoration.options.overviewRulerOptions.color;
     this._ctx.fillRect(
-      !decoration.options.overviewRulerOptions.position ||  decoration.options.overviewRulerOptions.position === 'left' ? 0 : decoration.options.overviewRulerOptions.position === 'right' ? renderSizes[SizeIndex.OUTER_SIZE] + renderSizes[SizeIndex.INNER_SIZE]: renderSizes[SizeIndex.OUTER_SIZE],
+      decoration.options.overviewRulerOptions.position === 'full' ||  decoration.options.overviewRulerOptions.position === 'left' ? 0 : decoration.options.overviewRulerOptions.position === 'right' ? renderSizes[SizeIndex.OUTER_SIZE] + renderSizes[SizeIndex.INNER_SIZE]: renderSizes[SizeIndex.OUTER_SIZE],
       Math.round(this._canvas.height * (decoration.options.marker.line / this._bufferService.buffers.active.lines.length)),
-      !decoration.options.overviewRulerOptions.position ? this._width : decoration.options.overviewRulerOptions.position === 'center' ? renderSizes[SizeIndex.INNER_SIZE] : renderSizes[SizeIndex.OUTER_SIZE],
-      // when a position is provided, the element has less width, so increase its height
-      window.devicePixelRatio * (decoration.options.overviewRulerOptions.position ? 6 : 2)
+      decoration.options.overviewRulerOptions.position === 'full' ? this._width : decoration.options.overviewRulerOptions.position === 'center' ? renderSizes[SizeIndex.INNER_SIZE] : renderSizes[SizeIndex.OUTER_SIZE],
+      window.devicePixelRatio * (decoration.options.overviewRulerOptions.position === 'full' ? 2 : 6)
     );
   }
 
diff --git a/src/browser/Terminal.ts b/src/browser/Terminal.ts
index 0c2f50868..496b8dfa6 100644
--- a/src/browser/Terminal.ts
+++ b/src/browser/Terminal.ts
@@ -98,6 +98,12 @@ export class Terminal extends CoreTerminal implements ITerminal {
    */
   private _keyDownHandled: boolean = false;
 
+  /**
+   * Records whether a keydown event has occured since the last keyup event, i.e. whether a key
+   * is currently "pressed".
+   */
+  private _keyDownSeen: boolean = false;
+
   /**
    * Records whether the keypress event has already been handled and triggered a data event, if so
    * the input event should not trigger a data event but should still print to the textarea so
@@ -1085,6 +1091,7 @@ export class Terminal extends CoreTerminal implements ITerminal {
    */
   protected _keyDown(event: KeyboardEvent): boolean | undefined {
     this._keyDownHandled = false;
+    this._keyDownSeen = true;
 
     if (this._customKeyEventHandler && this._customKeyEventHandler(event) === false) {
       return false;
@@ -1170,6 +1177,8 @@ export class Terminal extends CoreTerminal implements ITerminal {
   }
 
   protected _keyUp(ev: KeyboardEvent): void {
+    this._keyDownSeen = false;
+
     if (this._customKeyEventHandler && this._customKeyEventHandler(ev) === false) {
       return;
     }
@@ -1243,7 +1252,8 @@ export class Terminal extends CoreTerminal implements ITerminal {
   protected _inputEvent(ev: InputEvent): boolean {
     // Only support emoji IMEs when screen reader mode is disabled as the event must bubble up to
     // support reading out character input which can doubling up input characters
-    if (ev.data && ev.inputType === 'insertText' && !ev.composed && !this.optionsService.rawOptions.screenReaderMode) {
+    // Based on these event traces: https://github.com/xtermjs/xterm.js/issues/3679
+    if (ev.data && ev.inputType === 'insertText' && (!ev.composed || !this._keyDownSeen) && !this.optionsService.rawOptions.screenReaderMode) {
       if (this._keyPressHandled) {
         return false;
       }
diff --git a/src/common/services/DecorationService.ts b/src/common/services/DecorationService.ts
index 911fd369c..6c7502361 100644
--- a/src/common/services/DecorationService.ts
+++ b/src/common/services/DecorationService.ts
@@ -65,6 +65,9 @@ class Decoration extends Disposable implements IInternalDecoration {
   ) {
     super();
     this.marker = options.marker;
+    if (this.options.overviewRulerOptions && !this.options.overviewRulerOptions.position) {
+      this.options.overviewRulerOptions.position = 'full';
+    }
   }
   public override dispose(): void {
     this._onDispose.fire();
diff --git a/test/api/Terminal.api.ts b/test/api/Terminal.api.ts
index 43f1e97d7..b1582be85 100644
--- a/test/api/Terminal.api.ts
+++ b/test/api/Terminal.api.ts
@@ -770,8 +770,8 @@ describe('API Integration Tests', function(): void {
         await page.waitForSelector('.xterm-text-layer');
         await page.evaluate(`window.marker1 = window.term.addMarker(1)`);
         await page.evaluate(`window.marker2 = window.term.addMarker(2)`);
-        await page.evaluate(`window.term.registerDecoration({ marker: window.marker1, overviewRulerOptions: { color: 'red' } })`);
-        await page.evaluate(`window.term.registerDecoration({ marker: window.marker2, overviewRulerOptions: { color: 'blue' } })`);
+        await page.evaluate(`window.term.registerDecoration({ marker: window.marker1, overviewRulerOptions: { color: 'red', position: 'full' } })`);
+        await page.evaluate(`window.term.registerDecoration({ marker: window.marker2, overviewRulerOptions: { color: 'blue', position: 'full' } })`);
         await openTerminal(page);
         await pollFor(page, `document.querySelectorAll('.xterm-decoration-overview-ruler').length`, 0);
       });
@@ -781,8 +781,8 @@ describe('API Integration Tests', function(): void {
         await page.waitForSelector('.xterm-text-layer');
         await page.evaluate(`window.marker1 = window.term.addMarker(1)`);
         await page.evaluate(`window.marker2 = window.term.addMarker(2)`);
-        await page.evaluate(`window.term.registerDecoration({ marker: window.marker1, overviewRulerOptions: { color: 'red' } })`);
-        await page.evaluate(`window.term.registerDecoration({ marker: window.marker2, overviewRulerOptions: { color: 'blue' } })`);
+        await page.evaluate(`window.term.registerDecoration({ marker: window.marker1, overviewRulerOptions: { color: 'red', position: 'full' } })`);
+        await page.evaluate(`window.term.registerDecoration({ marker: window.marker2, overviewRulerOptions: { color: 'blue', position: 'full' } })`);
         await openTerminal(page);
         await pollFor(page, `document.querySelectorAll('.xterm-decoration-overview-ruler').length`, 1);
       });
diff --git a/typings/xterm.d.ts b/typings/xterm.d.ts
index e963a39ae..d0149c198 100644
--- a/typings/xterm.d.ts
+++ b/typings/xterm.d.ts
@@ -7,6 +7,8 @@
  * to be stable and consumed by external programs.
  */
 
+import { IModelDecorationOverviewRulerOptions } from 'vs/editor/common/model';
+
 /// <reference lib="dom"/>
 
 declare module 'xterm' {
@@ -453,7 +455,7 @@ declare module 'xterm' {
    */
   interface IDecorationOverviewRulerOptions {
     color: string;
-    position?: 'left' | 'center' | 'right';
+    position?: 'left' | 'center' | 'right' | 'full';
   }
 
   /*