Microsoft/vscode

long Scrolling with physical trackpad on Android does not work properly

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#255,975 opened on Jul 15, 2025

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androidbugchromiumhelp wantedtrackpad/scrollweb

Description

Does this issue occur when all extensions are disabled?: Yes

  • VS Code Version: vscode.dev
  • OS Version: Android 15, Chrome 138

When doing a fast scroll on Android when using a physical trackpad (Say keyboards that have built in trackpads), when doing quick scrolls, the page correctly continues scrolling even after the fingers are off the trackpad. But when the fingers touch the trackpad for a little longer (imagine you are doing a longer scroll because you want to get to the bottom of a file) then it blocks the scrolling as soon as you remove your fingers.

Steps to Reproduce:

  1. Open a scrollable file
  2. Do a large fast scroll to the bottom/top of the page
  3. Page scrolls as long as fingers are on the trackpad, then stops immediately

I'm guessing it might be related to: https://github.com/microsoft/vscode/issues/169002 As when I scroll the keyboard gets focused. I'm guessing it might be because it detects pointer down events, and if the next pointer up event is within a threshold, then it is considered a tap, else it's considered a scroll? Not sure

https://github.com/user-attachments/assets/2568989e-72df-4abe-b217-9721d5598cb0

Contributor guide

Tech stack
typescriptelectron
Domain
frontendmobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
touch eventsVS Code source code
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate the handling of pointer events in VS Code's Android scroll implementation. Look at the related issue #169002 and examine the code in src/vs/base/browser/dom.ts for scroll event handling. The user suspects a threshold for distinguishing taps from scrolls; review the event processing logic.