1291403 - Page down scrolls by more than Chrome

Status: RESOLVED INVALID

(Core :: DOM: UI Events & Focus Handling, defect, P3)

Description

[Andrew Overholt [:overholt]]

Attachment: differentpagedown.png

I've seen this on a bunch of sites but http://factordaily.com/alan-kay-apple-steve-jobs/ is one I noticed today. See the attached image for where a fullscreen Windows Nightly build scrolls to pressing <space> on both Chrome and Firefox. I've seen this on Linux a bunch, too.

I have been assuming this is just something the page is doing incorrectly (I often see it on thestar.com articles) but is it a Gecko bug?

I'm taking a stab at a component here. Olli, what do you think is the problem here, if any?

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

So space scrolling is just a default action for the key event.
And browsers seem to map it to same scrolling as page-down.

Are you complaining that different browsers scroll tiny bit different amount when doing page-down/up?

Comment 2

[Andrew Overholt [:overholt]]

(In reply to Olli Pettay [:smaug] from comment #1)
> Are you complaining that different browsers scroll tiny bit different amount
> when doing page-down/up?

Yes, and wondering if I'm being silly or if it's a browser bug.

Comment 3

[Olli Pettay [:smaug][[e-mail]]]

And what the bug would be? I'm not aware it being defined anywhere how much page-down is supposed to scroll. In practice it is a bit less than viewport height.

Comment 4

[Andrew Overholt [:overholt]]

OK, experimenting a bit it looks like Chrome just scrolls a bit less than Firefox does.

Comment 5

[Hsin-Yi Tsai (she/her)[:hsinyi]]

(In reply to Andrew Overholt [:overholt] from comment #4)

OK, experimenting a bit it looks like Chrome just scrolls a bit less than
Firefox does.

[domcore-bugbash-traige meeting]
And now it looks like Chrome scrolls a bit more than Firefox, when pressing <space> https://factordaily.com/from-loss-to-liberation-how-dhiraj-rajaram-fought-to-reclaim-his-company-and-himself/ Also per comment 3, the amount of scrolling is not specified. The site works well with this very tiny amount difference. Close this as invalid.