[Yokohama] UI Builder - Subpage shows empty in the subpage editor but not in the main page

[SamuelBouchard]

Hi,

I'm somewhat new to ServiceNow and am currently in training.
I'm currently getting used to the UI Builder, but I'm experiencing some issues.

Namely, I have a page which contains a viewport which can be switched between two subpages.

When editing the main page, both subpages are shown properly by the viewport.

However, when I go into either subpage to edit it, it displays only a white page, even though it does contain some visible elements.

Is it a known issue with Yokohama?
Is there any way to fix it or is there any workaround?

Thanks,

[Gudipudi Raval1]

Yes, I am also facing same issue, please suggest some one