From 48c18a7adc981bbf5a0dfd043400ebf4bce636f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B3=E5=90=9B=E5=81=A5?= <40288193@qq.com>
Date: Tue, 19 May 2026 15:56:08 +0800
Subject: [PATCH] fix(form-item): more appropriate modification that aligns
 with the form-item's intent to influence the width of subordinate elements
 (#4208)

---
 packages/vue/src/form-item/src/mobile-first.vue | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/vue/src/form-item/src/mobile-first.vue b/packages/vue/src/form-item/src/mobile-first.vue
index d46b84e33..e6952ede7 100644
--- a/packages/vue/src/form-item/src/mobile-first.vue
+++ b/packages/vue/src/form-item/src/mobile-first.vue
@@ -109,7 +109,8 @@
         :class="[
           '[&_[aria-label=checkbox-group]]:pl-0.5 sm:[&_[aria-label=checkbox-group]]:pl-0',
           '[&_>:first-child[data-tag=tiny-checkbox]]:pl-0.5 sm:[&_>:first-child[data-tag=tiny-checkbox]]:pl-0',
-          '[&_[class^=tiny-autocomplete]]:w-full',
+          '[&_.tiny-autocomplete]:w-full',
+          '[&_.tiny-cascader]:w-full',
           state.isDisplayOnly
             ? '[&_>*:not([data-tag^=tiny-],[class^=tiny-])]:leading-8 [&_>*:not([data-tag^=tiny-],[class^=tiny-])]:sm:leading-normal'
             : ''