diff --git a/packages/components/CHANGELOG.md b/packages/components/CHANGELOG.md
index d49f137f467c8..6e46c3b70f495 100644
--- a/packages/components/CHANGELOG.md
+++ b/packages/components/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Internal
+
+-   `Modal`: Remove children container's unused class name ([#50655](https://github.com/WordPress/gutenberg/pull/50655)).
+
 ## 24.0.0 (2023-05-10)
 
 ### Breaking Changes
diff --git a/packages/components/src/modal/index.tsx b/packages/components/src/modal/index.tsx
index a22dc2a4ec671..d9c7b602b8392 100644
--- a/packages/components/src/modal/index.tsx
+++ b/packages/components/src/modal/index.tsx
@@ -252,12 +252,7 @@ function UnforwardedModal(
 								) }
 							</div>
 						) }
-						<div
-							ref={ childrenContainerRef }
-							className="components-modal__children-container"
-						>
-							{ children }
-						</div>
+						<div ref={ childrenContainerRef }>{ children }</div>
 					</div>
 				</div>
 			</StyleProvider>
diff --git a/packages/edit-post/src/components/keyboard-shortcut-help-modal/test/__snapshots__/index.js.snap b/packages/edit-post/src/components/keyboard-shortcut-help-modal/test/__snapshots__/index.js.snap
index 5311dfa07b5c4..2ad8e457bae30 100644
--- a/packages/edit-post/src/components/keyboard-shortcut-help-modal/test/__snapshots__/index.js.snap
+++ b/packages/edit-post/src/components/keyboard-shortcut-help-modal/test/__snapshots__/index.js.snap
@@ -43,9 +43,7 @@ exports[`KeyboardShortcutHelpModal should match snapshot when the modal is activ
         </svg>
       </button>
     </div>
-    <div
-      class="components-modal__children-container"
-    >
+    <div>
       <section
         class="edit-post-keyboard-shortcut-help-modal__section edit-post-keyboard-shortcut-help-modal__main-shortcuts"
       >
diff --git a/packages/edit-post/src/components/preferences-modal/test/__snapshots__/index.js.snap b/packages/edit-post/src/components/preferences-modal/test/__snapshots__/index.js.snap
index 5a6ff1e5fffee..2d43aa7922f36 100644
--- a/packages/edit-post/src/components/preferences-modal/test/__snapshots__/index.js.snap
+++ b/packages/edit-post/src/components/preferences-modal/test/__snapshots__/index.js.snap
@@ -102,9 +102,7 @@ exports[`EditPostPreferencesModal should match snapshot when the modal is active
         </svg>
       </button>
     </div>
-    <div
-      class="components-modal__children-container"
-    >
+    <div>
       <div
         class="interface-preferences__tabs"
       >
@@ -725,9 +723,7 @@ exports[`EditPostPreferencesModal should match snapshot when the modal is active
         </svg>
       </button>
     </div>
-    <div
-      class="components-modal__children-container"
-    >
+    <div>
       <div
         class="components-navigator-provider interface-preferences__provider emotion-0 emotion-1"
         data-wp-c16t="true"
diff --git a/packages/edit-site/src/components/start-template-options/style.scss b/packages/edit-site/src/components/start-template-options/style.scss
index 715e829ecab3a..7515861099b38 100644
--- a/packages/edit-site/src/components/start-template-options/style.scss
+++ b/packages/edit-site/src/components/start-template-options/style.scss
@@ -1,28 +1,27 @@
-.edit-site-start-template-options__modal {
-	.components-modal__content {
-		padding-bottom: 0;
-	}
+$actions-height: 92px;
 
-	.components-modal__children-container {
-		display: flex;
-		height: 100%;
-		flex-direction: column;
-
-		.edit-site-start-template-options__modal__actions {
-			margin-top: auto;
-			position: sticky;
-			bottom: 0;
-			background-color: $white;
-			margin-left: - $grid-unit-40;
-			margin-right: - $grid-unit-40;
-			padding: $grid-unit-30 $grid-unit-40 $grid-unit-40;
-			border-top: 1px solid $gray-300;
-			z-index: z-index(".edit-site-start-template-options__modal__actions");
-		}
+.edit-site-start-template-options__modal {
+	.edit-site-start-template-options__modal__actions {
+		position: absolute;
+		bottom: 0;
+		width: 100%;
+		height: $actions-height;
+		background-color: $white;
+		margin-left: - $grid-unit-40;
+		margin-right: - $grid-unit-40;
+		padding-left: $grid-unit-40;
+		padding-right: $grid-unit-40;
+		border-top: 1px solid $gray-300;
+		z-index: z-index(".edit-site-start-template-options__modal__actions");
 	}
 
 	.block-editor-block-patterns-list {
-		padding-bottom: $grid-unit-40;
+		// Since the actions container is positioned absolutely,
+		// this padding bottom ensures that the content wrapper will properly
+		// detect overflowing content and start showing scrollbars at the right
+		// moment. Without this padding, the content would render under the actions
+		// bar without causing the wrapper to show a scrollbar.
+		padding-bottom: $actions-height;
 	}
 }