1714053 - Tab get's stuck when buying stuff on allegro.pl

Status: NEW

(GeckoView :: General, defect, P3)

Description

[Petru-Mugurel Lingurar [:petru]]

From github: https://github.com/mozilla-mobile/fenix/issues/19751.

Steps to reproduce

1. Open allegro.pl
2. Login
3. Add something to cart
4. Try to buy it

Expected behavior

I can finish buying it

Actual behavior

Firefox content process uses 100% cpu and I cannot interact with page at all
Here is a performance profile of it: https://share.firefox.dev/3pcheLR

Device information

• Device vendor / model and Android version: Samsung Galaxy J7 2017
• Firefox for Android version: Firefox nightly 90.0a1 (Build #2015813833), happens on release as well.

I reported a very similar (or same) issue here, but it previously stopped reproducing, but now it's back:
https://github.com/mozilla-mobile/fenix/issues/16234

Change performed by the Move to Bugzilla add-on.

Comment 1

[Kevin Brosnan [Ex-Mozilla]]

Lots of time spent on touchmove events so maybe DOM or the website is poorly coded?

Comment 2

[Mirko Brodesser (:mbrodesser-Igalia)]

Edgar: can you please help triaging this?

Comment 3

[Edgar Chen [:edgar]]

touchmove event handler seem to not take too much time, 20~30 ms per event.
But I noticed that there is a lot of deviceorientation and devicemotion event get fired.
Not sure if it is normal that devices keeps sending deviceorientation and devicemotion event so frequently.
Since they are from Android Hal, switch bug to Widget: Android to see if someone could take a look.
(Please feel free to swtich to other component if it is not the right one)

Comment 4

[David Lawrence [:dkl]]

Moving all open Core::Widget: Android bugs to GeckoView::General (then the triage owner of GeckoView will decide which ones are valuable and which ones should be closed).