Created attachment 8881762 [details] spiegel-de header partially hidden - fpi on.png Prerequisites: Create the perf ""privacy.firstparty.isolate"" and enable it Disable the perf ""network.predictor.enabled"" Disable the perf ""network.predictor.enable-prefetch"" Disable the perf ""browser.safebrowsing.malware.enabled"" Disable the perf ""browser.safebrowsing.phishing.enabled"" Create the perf ""privacy.firstparty.isolate.restrict_opener_access"" and Enable it Steps to reproduce: 1. Go to orange.fr, spiegel.de or cdiscount.com, navigate, place an order and start the registration process. The bug doesn't always happen right away. 2. While filling in forms observe how tapping in an empty field, or a button, doesn't respond. 3. Tap just below the object and see if it's responding. Expected results: Objects should stay in place and respond when tapping on them. Actual results: After some navigation, trying to place an order, login, filling in form with errors, the page is somehow scrolled up, hiding the headers completly/partialy and all elements (images, text fields, buttons etc) have to be tapped below them, in order to respond. notes: See the screenshots attached, noticing how the page headers are hidden.
tracking-fennec: --- → ?
status-firefox55: --- → affected
QA Contact: oana.horvath
Ethan, would you help check if this is something TPE SecEng team going to take? Thanks.
I'm really confused about how FPI would change how a page is interacted with. I could imagine it might change the layout, but what happens when you click an element? I'm understanding this report to say "The browser doesn't interpret my click correctly" - and I'm really confused about how FPI could affect that. Are we sure this only happens with FPI turned on?
Cynthia, could you help to reproduce and verify this bug is caused by First Party Isolation, or it's a Fennec issue in general?
Flags: needinfo?(ettseng) → needinfo?(ctang)
Hi Oana, Could you please provide a video for this bug? Thank you.
Flags: needinfo?(ctang) → needinfo?(oana.horvath)
@Cynthia, I've tried today to record this bug but I could not reproduce it. It usually happens after some consistent navigation, but today it didn't happen. I will try again these days and I'll post the recording as soon as I can. Thank you!
Oana, were you able to reproduce the problem again? Otherwise I think we should/could close this bug - thanks.
No, haven't been able to reproduce this in multiple tries. I'll close the bug. Thank you!
Status: NEW → RESOLVED
Last Resolved: 7 months ago
Resolution: --- → WORKSFORME
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