angular / angular/components

bug(Tooltip): Prevents touch scrolling

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#25,566 7 comments 8 reactions 0 assignees View on GitHub
area: material/tooltip P3
Dominant language
TypeScript
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Description

### Is this a regression?

- [ ] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

_No response_

### Description

Duplicate of (closed) https://github.com/angular/components/issues/4892

`MatTooltip` triggers with `matTooltipTouchGestures` set to `auto` (default) or `on` break page scrolling on touch devices. When set to either of these values the directive sets `touch-action: none` on the trigger, which breaks native page scrolling.

On a page with many tooltip triggers (e.g. dense links) it can be difficult to scroll the page at all.

Setting `matTooltipTouchGestures` to `off` fixes scrolling, but makes tooltips inaccessible on touch devices.

### Reproduction

Reproduction taken from https://github.com/angular/components/issues/4892#issuecomment-832516128

Steps to reproduce:
1. Open https://stackblitz.com/edit/angular-ylctyk on a touch device (phone, touch laptop) in Chrome
2. Scroll the page by initiating a touch on the white background
3. Attempt to scroll the page by initiating a touch on the black box

### Expected Behavior

Page scrolls

### Actual Behavior

Page does not scroll

### Environment

- Angular: Latest Google-internal version
- CDK/Material: Latest Google-internal version
- Browser(s): Chrome 104
- Operating System (e.g. Windows, macOS, Ubuntu): Android

Contributor guide

Open the contributing guide

Research direction

Start with the MatTooltip directive and reproduce the issue using the linked StackBlitz example on an Android touch device in Chrome 104. The fix is done when the page scrolls from a touch on a tooltip trigger while touch tooltips remain available; verify both the default or auto setting and on.

Written by the indexing model from the issue text.

Assessment

Tech stack
angular, typescript
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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