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“Modal window” display stops working. #386

Description

@matt-cook

Environment

Hardware: ASUS Chromebox 3 N017U

OS: Google ChromeOS, all versions

Input type: touchscreen, mouse/keyboard

Chrome App version: kiosk-9.3.0

Steps to reproduce

Under Browser settings in Kiosk app configuration, tick the checkbox for the setting “Enable New Windows and Dialogs”.
Set the “New Window Mode” setting to “Modal Window”
Attempt to access any URL that uses the html target attribute target=”_blank”
Before the page in the modal window renders completely, click outside the modal window, closing it. It may require more than one try but will not require very many.

Expected result

The URL is consistently rendered in a modal window.

Actual result

The modal window does not open at all and will not open again until the kiosk app is killed and restarted, e.g. by rebooting the device.

Severety

Critical – once the bug occurs the device can no longer display content. On a moderately-busy kiosk the bug can occur very quickly.

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