[Webkit-unassigned] [Bug 189522] New: ASSERTION FAILED: size.width <= self.bounds.size.width && size.height <= self.bounds.size.height in -[WKWebView(WKPrivate) _setMaximumUnobscuredSizeOverride:]

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189522

            Bug ID: 189522
           Summary: ASSERTION FAILED: size.width <= self.bounds.size.width
                    && size.height <= self.bounds.size.height in
                    -[WKWebView(WKPrivate)
                    _setMaximumUnobscuredSizeOverride:]
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: iOS 11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dbates at webkit.org
                CC: koivisto at iki.fi, simon.fraser at apple.com,
                    zalan at apple.com

Seen using a debug build of WebKit r235897 for iOS Simulator.

Steps to reproduce:

1. Open an iPad simulator instance.
2. Rotate the iPad to landscape such that the home button is on the left. (Not sure this matters).
3. Visit <data:text/html,<div%20style="border:1px%20solid%20black;%20width:%20300px;height:%20300px"%20contenteditable="true"></div>>
4. Focus the editable <div>.
5. Click the + button to open a new tab.

Then MobileSafari will crash due because ASSERT(size.width <= self.bounds.size.width && size.height <= self.bounds.size.height) fails in -[WKWebView(WKPrivate) _setMaximumUnobscuredSizeOverride:].

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