# BrXM 13: Channel Manager Device Preview breaks **URL:** \ **Category:** Experience Manager (PaaS/OnPrem)\ **Created:** [June 19, 2019, 2:27pm UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181 "2019-06-19T14:27:11Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![mdrenthe](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mdrenthe/32/303_2.png) [@mdrenthe](https://community.bloomreach.com/u/mdrenthe)\ **Post date:** [June 19, 2019, 2:27pm UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/1 "2019-06-19T14:27:11Z")
I get a channel that represents the page. After selecting the device: it removes the content of the page. When selecting a page it removes the device i selected [Show case](https://youtu.be/yt65aDttHT0) [Documentation](https://documentation.bloomreach.com/library/concepts/template-composer/device-preview.html) ---
**Author:** ![mathijs](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mathijs/32/26_2.png) [@mathijs](https://community.bloomreach.com/u/mathijs)\ **Post date:** [June 21, 2019, 11:01am UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/2 "2019-06-21T11:01:46Z")
That’s weird. Which version of brXM are you using exactly? And which browser on which OS? I’ve just checked the public demo ([https://cms.demo.onehippo.com](https://cms.demo.onehippo.com)) in Chrome 75 on Linux, and there the device preview seems to work fine. Do you see any errors in the JavaScript console? Mathijs ---
**Author:** ![mdrenthe](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mdrenthe/32/303_2.png) [@mdrenthe](https://community.bloomreach.com/u/mdrenthe)\ **Post date:** [June 21, 2019, 11:50am UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/3 "2019-06-21T11:50:59Z")
I am using: BrXM: 13.2.0 Windows 10 Pro for Workstations (Version: 1809) (Build: 17763.557) Chrome: 75.0.3770.100 (Official build) (64-bits) > [Deprecation] Percentages row tracks and gutters for indefinite height grid containers will be resolved against the intrinsic height instead of being treated as auto and zero respectively. This change will happen in M70, around October 2018. See [Chrome Platform Status](https://www.chromestatus.com/feature/6708326821789696) for more details. Firefox: 67.0.3 (64-bits) > Het ‘content’-attribuut van Window-objecten wordt niet meer ondersteund. Gebruik in plaats daarvan ‘window.top’. content.min.js:2:3379 > error getting eventBus from Ext TypeError: “window.parent.Ext is undefined” > init https://–domain–/content/scripts/hippo-cms.min.js:1 > https://–domain–/content/scripts/hippo-cms.min.js:1 > hippo-cms.min.js:1:5874 > [banner] img onload triggered ---
**Author:** ![pekala](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/pekala/32/249_2.png) [@pekala](https://community.bloomreach.com/u/pekala)\ **Post date:** [June 21, 2019, 12:36pm UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/4 "2019-06-21T12:36:08Z")
I’ve got 3 websites running on v13 and in every project it works fine. ---
**Author:** ![mdrenthe](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mdrenthe/32/303_2.png) [@mdrenthe](https://community.bloomreach.com/u/mdrenthe)\ **Post date:** [June 21, 2019, 12:52pm UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/5 "2019-06-21T12:52:42Z")
Thank you for your response. As you can see from my case it isn’t. And sure i want to believe it’s inside the code. Still a hint where this might come from is appreciated. Does any of you have a youtube embedded in there? ---
**Author:** ![mdrenthe](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mdrenthe/32/303_2.png) [@mdrenthe](https://community.bloomreach.com/u/mdrenthe)\ **Post date:** [June 24, 2019, 9:19am UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/6 "2019-06-24T09:19:29Z")
I can reproduce it on BrXM 13 Demo site: [Show case at Demo site](https://youtu.be/ZbshEAT5Lek) ---
**Author:** ![mathijs](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mathijs/32/26_2.png) [@mathijs](https://community.bloomreach.com/u/mathijs)\ **Post date:** [June 24, 2019, 9:44am UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/7 "2019-06-24T09:44:13Z")
This seems to be a product issue :(. I’ll create a ticket for it. Thanks for the heads up! Mathijs ---
**Author:** ![mathijs](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mathijs/32/26_2.png) [@mathijs](https://community.bloomreach.com/u/mathijs)\ **Post date:** [June 24, 2019, 10:01am UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/8 "2019-06-24T10:01:12Z")
I’ve created [https://issues.onehippo.com/browse/CHANNELMGR-2385](https://issues.onehippo.com/browse/CHANNELMGR-2385) for it. ---
**Author:** ![mdrenthe](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.bloomreach.com/mdrenthe/32/303_2.png) [@mdrenthe](https://community.bloomreach.com/u/mdrenthe)\ **Post date:** [July 11, 2019, 2:31pm UTC](https://community.bloomreach.com/t/brxm-13-channel-manager-device-preview-breaks/1181/9 "2019-07-11T14:31:40Z")
Have tested it with release 13.3.0 and noticed this is resolved