Product view page scrolls up randomly on mobile device

xiaolinwuu commented 5 years ago

In the product view page when I scroll down a little bit, sometimes (very often) the page scrolls to the top.

Preconditions (*)

Magento 2.3.0 (in my case) but I think also in previous versions
Physical mobile device, Product view page

Steps to reproduce (*)

Go to any product view page
Scroll down slowly a little bit like 20-30px
If it can't reproduces retry again

Expected result (*)

The page should not scroll up automatically

Actual result (*)

The page scrolls up randomly

This is the effect: https://www.youtube.com/watch?v=aKwLVwIMrpM

magento-engcom-team commented 5 years ago

Hi @xiaolinwuu. Thank you for your report. To help us process this issue please make sure that you provided the following information:

[ ] Summary of the issue
[ ] Information on your environment
[ ] Steps to reproduce
[ ] Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento-engcom-team give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@xiaolinwuu do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

[ ] yes
[ ] no

xiaolinwuu commented 5 years ago

I found out the scroll up takes place only on mobile chrome application, I think the issue is caused by the chrome topbar that shows/hides when we manually scroll the page

xiaolinwuu commented 5 years ago

The issue was in the two elements of the fotorama widget: .fotoramaactive .fotoramaimg

They have top: 50% and position: absolute, so when chrome topbar shows/hides, the page suddenly jumps to the top.

I solved the problem extending the following css:

@media @mobile {
        .catalog-product-view {
            .fotorama__stage__frame.fotorama__active {
                position: static !important;
            }
            .fotorama__stage__frame .fotorama__img {
                position: static !important;
                transform: initial !important;
            }
       }
}

magento-engcom-team commented 5 years ago

Hi @shikhamis11. Thank you for working on this issue. In order to make sure that issue has enough information and ready for development, please read and check the following instruction: :point_down:

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Details
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[ ] 3. Add Component: XXXXX label(s) to the ticket, indicating the components it may be related to.
[ ] 4. Verify that the issue is reproducible on 2.3-develop branch
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shikhamis11 commented 5 years ago

@magento-engcom-team give me 2.3-develop instance

magento-engcom-team commented 5 years ago

Hi @shikhamis11. Thank you for your request. I'm working on Magento 2.3-develop instance for you

magento-engcom-team commented 5 years ago

Hi @shikhamis11, here is your Magento instance. Admin access: https://i-21717-2-3-develop.instances.magento-community.engineering/admin Login: admin Password: 123123q Instance will be terminated in up to 3 hours.

magento-engcom-team commented 5 years ago

@shikhamis11 Thank you for verifying the issue.

Unfortunately, not enough information was provided to acknowledge ticket. Please consider adding the following:

[ ] Add "Component: " label(s) to this ticket based on verification result. If uncertain, you may follow the best guess

Once all required information is added, please add label "Issue: Confirmed" again. Thanks!

magento-engcom-team commented 5 years ago

:white_check_mark: Confirmed by @shikhamis11 Thank you for verifying the issue. Based on the provided information internal tickets MAGETWO-98944, MAGETWO-98945 were created

Issue Available: @shikhamis11, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.