palantir/blueprint

DateInput3: Unable to select 6am with UTC timezone on the date of the end of daylight savings

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#6,524 建立於 2023年11月7日

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P2Package: datetimeType: bughelp wanted

描述

Environment

  • Package version(s): 5.6.0
  • Operating System: macOS
  • Browser name and version: Chrome

Steps to reproduce

  1. Visit the DateInput3 docs https://blueprintjs.com/docs/#datetime2/date-input3
  2. Select UTC timezone and November 5th 2023 (or another date of the end of daylight savings e.g: November 6th 2022)
  3. Try entering 6 am, incrementing 5am to 6am, or decrementing 7am to 6am and see it is not possible to persist the 6am selection

6am

Actual behavior

When attempting to select 6am with the UTC timezone on the date of the end of daylight savings the selection changes to 5am

Expected behavior

When entering 6am with the UTC timezone on the date of the end of daylight savings the selection should persist as 6am

貢獻者指南

技術棧
typescriptreacthtmlcss
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。
clear
前置要求
React basicsFamiliarity with date/time handling
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。
65
研究方向
Investigate the DateInput3 component source code, particularly the timezone handling logic around daylight saving transitions. Look at how the component converts between UTC and local time, and identify where the 6am selection is incorrectly shifted to 5am. Check for any existing tests or comments related to DST behavior.
DateInput3: Unable to select 6am with UTC timezone on the date of the end of daylight savings · palantir/blueprint#6524 | Good First Issue