Bug 164987 - Touchscreen- Single finger events register as multi-touch events after clicking certain webpage elements
Summary: Touchscreen- Single finger events register as multi-touch events after clicki...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebKitGTK (show other bugs)
Version: WebKit Local Build
Hardware: PC Linux
: P2 Normal
Assignee: Nobody
URL:
Keywords: Gtk, HTML5
Depends on:
Blocks:
 
Reported: 2016-11-19 08:18 PST by spariant4
Modified: 2016-12-03 08:40 PST (History)
4 users (show)

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Description spariant4 2016-11-19 08:18:38 PST
On a touchscreen, a single finger scroll starts registering as a multi-finger zoom gesture after certain interactions with webpage elements. Scroll up starts registering as zoom-out and scroll-down as zoom-in. Single finger events including clicks stop registering after this has happened, even after reloading the page.  
  
I can consistently replicate this on full-screen HTML5 videos (eg on youtube) after touching the "seek" bar at the bottom of the video. Also on any duck-duck-go search page (example: https://duckduckgo.com/?q=webkit), after tapping the "settings" buton on the top right of the page.  
Note: Clicking these elements with the mouse does not produce the bug, only when tapping them with the touchscreen.  
   
I wonder if the complex html5 elements on these pages is causing this (the settings button on duck-duck-go is supposed to animate a slide-out pane for example).