[Toolbar redesign] Top address toolbar border unexpectedly shown on webpage

[data-sync-user]

When placed in the top position, the address toolbar bottom border should only be visible on webpages once the webpage has started scrolling. Sometimes when navigating to a webpage, the border is immediately visible before scrolling

Prerequisites:

• Toolbar refactor is enabled
• Address toolbar is set to the top position
• No tabs are open, Firefox is on the homepage

Steps to reproduce:

1. Open Firefox
2. Go to google.com
3. Observe

Expected results:

• Address toolbar bottom border is not visible

Actual results:

• Address toolbar bottom border is visible

Device / build info:

• Device: iPhone 15 (iOS 17.5)
• Build: v132 (main branch)

Notes:

• This also happens when going from source webpage to destination webpage if the border is visible on the source webpage. Behavior is correct when navigating from source webpage to destination webpage if the border is not visible on the source webpage.

┆Issue is synchronized with this Jira Bug

[data-sync-user]

➤ Adina Petridean commented:

Verified as fixed on FIREFOX 9000 (46072) with iPhone 14 Pro Max (iOS 16.2).

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