don't show scrollbar

docs/resources/changelog.md

@@ -27,6 +27,7 @@ This release includes a complete rewrite of `<sl-select>` to improve accessibili
 - Fixed a bug in `<sl-tree-item>` where the checked/indeterminate states could get out of sync when using the `multiple` option [#1076](https://github.com/shoelace-style/shoelace/issues/1076)
 - Fixed a bug in `<sl-tree>` that caused `sl-selection-change` to emit before the DOM updated [#1096](https://github.com/shoelace-style/shoelace/issues/1096)
 - Fixed a bug that prevented `<sl-switch>` from submitting a default value of `on` when no value was provided [#1103](https://github.com/shoelace-style/shoelace/discussions/1103)
+- Fixed a bug in `<sl-textarea>` that caused the scrollbar to show sometimes when using `resize="auto"`
 - Reorganized all components to make class structures more consistent
 - Updated some incorrect default values for design tokens in the docs [#1097](https://github.com/shoelace-style/shoelace/issues/1097)
 - Updated non-public fields to use the `private` keyword (these were previously private only by convention, but now TypeScript will warn you)

src/components/textarea/textarea.styles.ts

@@ -164,5 +164,6 @@ export default css`
   .textarea--resize-auto .textarea__control {
     height: auto;
     resize: none;
+    overflow-y: hidden;
   }
 `;