Ignore blur event inside the open menu #1648
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This can happen on iOS. If the select is opened a blur event is fired immediately.
What:
This patch fixes a bug where the select would immediately close again on iOS Safari.
Possible fix for #443.
Why:
Safari on iOS could trigger a blur event immediately after the dropdown was opened.
How:
There is now a check that verifies that when an input blur event is received, the active element is not inside the menu since this would close the menu.
Checklist:
We originally patched this locally in version 6 and this has been in production for years together with the changes for #1647.