[Webkit-unassigned] [Bug 242060] New: Accessory bar next/previous buttons do not detect inputs that overflow (iOS 14.5+)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242060

            Bug ID: 242060
           Summary: Accessory bar next/previous buttons do not detect
                    inputs that overflow (iOS 14.5+)
           Product: WebKit
           Version: Safari 14
          Hardware: iPhone / iPad
                OS: iOS 14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sean at ionic.io

Starting in approximately iOS 14.5.*, Mobile Safari no longer detects input elements for the navigation buttons within the accessory/quick type bar, if they overflow. This problem is not reproducible in iOS 14.4 and earlier. 


Reproduction:
1. Visit: https://codepen.io/sean-perkins-ionic/pen/QWmLPPX on Mobile Safari (iOS 14.5.0 or later)
2. Tap the first input to draw focus to the input and present the keyboard
3. Observe: The next button is enabled in the accessory/quick type bar
4. Tap the next button to advance to the next focusable input
5. Repeat Step 4 until the next button becomes disabled
6. Manually scroll the container to bring inputs that were overflowed, into the visible viewport
7. Tap the previous button on the accessory/quick type bar
8. Observe: The next button becomes enabled
9. Tap the next button multiple times
10. Observe: Inputs that previously would not receive focus, will receive focus until you reach the start of the new overflowed elements.

Expected:

The next/previous buttons should be able to focus input elements in a scroll container that are overflowed.

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