1917934 - Unexpected pull-to-refresh when scrolling nested scroll view horizontally (if the finger motion is slightly diagonal)

Status: NEW

(Firefox for Android :: Browser Engine, defect)

Description

[Markus Stange [:mstange]]

Attachment: screen recording

Steps to reproduce:

1. In Firefox for Android, go to https://www.twitch.tv/
2. Scroll the first row of videos horizontally, and in the same gesture, move your finger downwards.

Expected results:
The downwards motion should be ignored. We are scrolling a subframe and the subframe is only horizontally scrollable.

Actual results:
The downward motion is turned into a pull-to-refresh gesture.

Comment 1

[Hiroyuki Ikezoe (:hiro)]

This is a similar case that this comment says, but a subframe case.

If we want to allow pull-to-refresh in the case of the root scroll container, we have to fix this bug in APZ, if we want to disallow pull-to-refresh in the case of the root as well, we will fix this bug in android-components.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:boek, could you have a look please?

For more information, please visit BugBot documentation.