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Iframes are cropped on scroll
Reported by
tedermx@gmail.com,
Sep 7
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36 Steps to reproduce the problem: 1. Have a Youtube iframe inserted into wrapper iframe. Put that inside lengthy (a couple of screens tall, maybe taller) content on the page. 2. Load the page, scroll it up and down so the iframe goes in and out of view What is the expected behavior? Iframe's placeholder is shown fully and correctly. What went wrong? Iframe's placeholder is visually cropped, with cropped part being blank. Every time iframe goes in view, it is cropped to a different extent. Did this work before? Yes 68 (not exactly sure) Does this work in other browsers? Yes Chrome version: 69.0.3497.81 Channel: stable OS Version: OS X 10.13.3 Flash Version: Examples of affected sites are Livejournal https://casperjs1.livejournal.com/62566.html and Medium https://medium.com/@testerfromrambler/nunc-quis-odio-ut-quam-finibus-ultricies-sed-eleifend-mi-9c82a41af416 Both utilize iframe wrappers over original media iframes. For some reason, the bug doesn't reproduce on Telegraph: https://telegra.ph/Video-Test-09-06 What's especially interesting about Telegraph here is that you can take Telegraph double-iframe and put it into clean test page. Bug will repoduce: https://jsfiddle.net/94wte5hx/1/ The bug manifested itself when Chrome updated to 69 release. Additional inquiry: If there exists a kind of a quick fix for the issue (even if it's not very pretty), it will help a great lot.
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Sep 7
As for a workaround, try choosing "opt out" in chrome://flags/#site-isolation-trial-opt-out Or run chrome with "--disable-site-isolation-trials" in the command line. N.B. Disabling site isolation weakens security.
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Sep 7
Thank you, looks very much like it! Is it possible to know the miniupdate schedule or deploy date of this next miniupdate specifically?
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Sep 9
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Sep 10
tedermx@ Thanks for the update. This issue looks similar to issue 868558 as per comment #1. Hence merging this issue to issue 868558 and removing 'Needs-Bisect' label. Please feel free to undupe if it is not similar. Thanks..
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Sep 10
Most likely the same thing, so it's OK, thanks! |
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Comment 1 by woxxom@gmail.com
, Sep 7