[Webkit-unassigned] [Bug 257690] New: UI process crash: Assertion 'this->_M_is_engaged()' failed.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=257690

            Bug ID: 257690
           Summary: UI process crash: Assertion 'this->_M_is_engaged()'
                    failed.
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: two at envs.net
                CC: bugs-noreply at webkitgtk.org

GNOME Web from flathub prints this in logs and crashes:

```
/usr/include/c++/12.2.0/optional:477: constexpr _Tp& std::_Optional_base_impl<_Tp, _Dp>::_M_get() [with _Tp = MotionEvent; _Dp = std::_Optional_base<MotionEvent, true, true>]: Assertion 'this->_M_is_engaged()' failed.
```

this usually happens during session restore, but can also happen during usage.

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