ant-design/ant-design

Visual glitch when opening a Modal containing an already opened Select

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#48,497 建立於 2024年4月16日

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 (1 留言) (3 反應) (0 負責人)TypeScript (98,031 star) (54,612 fork)batch import
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描述

Reproduction link

Edit on CodeSandbox

Steps to reproduce

Click the "Open modal" button in the reproduction sandbox.

What is expected?

The opened select should show up in perfect sync with the modal.

What is actually happening?

Both components open at slightly different places, then are overlapping correctly.

Environment Info
antd 5.1.6
React 18.2.0
System Windows 10 Pro
Browser Firefox 124.0.2

A fix that works is to use the getPopupContainer attribute of Select, to specify that the modal content should be the container of the select. Concretely having the getPopupContainer callback returning this: document.getElementsByClassName("ant-modal-content")[0].

But we'd rather avoid doing that and have the perfect synchronization working out the box.

Note: the glitch doesn't look that bad on the sandbox, but does look pretty bad in our application.

貢獻者指南

技術棧
typescriptreact
領域
frontend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Understanding of React portal behaviorFamiliarity with ant design components
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
40
研究方向
Investigate the positioning synchronization between Modal and Select. The workaround using getPopupContainer suggests a portal container mismatch. Check ant design's Modal and Select source files for how popup containers are determined. Look for CSS issues (z index, stacking context) when a Select is opened inside a Modal before the Modal animation completes. Review the sandbox reproduction to isolate the timing of the glitch.