diff --git a/components/_util/isServer.ts b/components/_util/isServer.ts
new file mode 100644
index 000000000..df6bd5693
--- /dev/null
+++ b/components/_util/isServer.ts
@@ -0,0 +1 @@
+export const isServer = typeof window === 'undefined';
diff --git a/components/_util/utils.ts b/components/_util/utils.ts
index 0b174c442..3bf1fca93 100644
--- a/components/_util/utils.ts
+++ b/components/_util/utils.ts
@@ -4,7 +4,8 @@ import { isFinite, isNull, isString, isUndefined } from 'lodash-es';
 
 export const noop = () => {};
 export const noopInNoop = () => noop;
-export const defaultContainer = () => document.body;
+export const defaultContainer = () =>
+    typeof document !== 'undefined' ? document.body : null;
 
 export async function sleep(ms: number): Promise<void> {
     return new Promise((resolve) => {
@@ -148,7 +149,7 @@ export function getScrollParent(
         const { overflow, overflowX, overflowY } = getComputedStyle(
             parentNode as HTMLElement,
         );
-        if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {
+        if (/auto|scroll|overlay/.test(overflow + overflowY + overflowX)) {
             return parentNode as HTMLElement;
         }
     }
diff --git a/components/form/style/index.less b/components/form/style/index.less
index 86f4d312d..ea28ad120 100644
--- a/components/form/style/index.less
+++ b/components/form/style/index.less
@@ -102,7 +102,7 @@
     // formItem 的 span 属性，占据的列数
     each(range(24), {
         .@{form-item-cls}-span-@{value} {
-            grid-column: span @value / span @value;
+            grid-column: span @value;
         }
     });
 }
diff --git a/components/modal/style/index.less b/components/modal/style/index.less
index 2171748ce..5cc5157ba 100644
--- a/components/modal/style/index.less
+++ b/components/modal/style/index.less
@@ -130,6 +130,8 @@
         padding: @padding-xs 0;
         color: var(--f-sub-head-color);
         font-size: var(--f-font-size-base);
+        overflow: hidden;
+        word-break: break-all;
     }
 
     &-footer {
diff --git a/components/popper/usePopper.ts b/components/popper/usePopper.ts
index c64d19606..51fe567b9 100644
--- a/components/popper/usePopper.ts
+++ b/components/popper/usePopper.ts
@@ -4,6 +4,7 @@ import { isBoolean, isFunction } from 'lodash-es';
 import { useVModel } from '@vueuse/core';
 import popupManager from '../_util/popupManager';
 import getElementFromVueInstance from '../_util/getElementFromVueInstance';
+import { isServer } from '../_util/isServer';
 
 import type { PopperProps } from './props';
 import type { VirtualRect } from './interface';
@@ -27,7 +28,7 @@ export default (props: PopperProps, emit: any) => {
     const popperRef = ref<HTMLElement>();
     const arrowRef = ref<HTMLElement>();
     const popperStyle = reactive({
-        zIndex: popupManager.nextZIndex(),
+        zIndex: isServer ? 2000 : popupManager.nextZIndex(),
     });
     const placement = ref(props.placement);
     const cacheVisible = ref(true);
@@ -38,6 +39,9 @@ export default (props: PopperProps, emit: any) => {
     });
 
     const computePopper = () => {
+        if (isServer) {
+            return;
+        }
         if (isBoolean(props.disabled) && props.disabled) {
             return;
         }
@@ -51,6 +55,9 @@ export default (props: PopperProps, emit: any) => {
 
         nextTick(() => {
             const rawTriggerEl = getElementFromVueInstance(triggerRef.value);
+            if (!rawTriggerEl) {
+                return;
+            }
             const triggerRect = rawTriggerEl.getBoundingClientRect();
             // trigger 不可见的时候立即隐藏，允许误差
             if (triggerRect.width <= 1 && triggerRect.height <= 1) {