Change Details

When an OOUI modal dialog is opened it adds a `oo-ui-windowManager-modal-active` class to the body, which disables scrolling of the content underneath. In Vector 2022 this is being overridden by `.vector-feature-zebra-design-disabled body` which sets `overflow-y` back to `scroll`

**Steps to replicate the issue** - Open an OOUI modal dialog, such as when selecting "insert" -> "template" from VisualEditor. **What happens?**: When an OOUI modal dialog is opened it adds a `oo-ui-windowManager-modal-active` class to the body, which disables scrolling of the content underneath. In Vector 2022 this is being overridden by `.vector-feature-zebra-design-disabled body` which sets `overflow-y` back to `scroll` {F36989064, size=full} **What should have happened instead?**: The content underneath the modal should not be scrollable. ###AC [ ] The user is not able to scroll the content when an OOUI modal dialog is open.

When an OOUI modal dialog is opened it adds a `oo-ui-windowManager-**Steps to replicate the issue** - Open an OOUI modal-active` class to the body dialog, which disables scrollsuch as when selecting of the content underneath"insert" -> "template" from VisualEditor. **What happens?**: When an OOUI modal dialog is opened it adds a `oo-ui-windowManager-modal-active` class to the body, which disables scrolling of the content underneath. In Vector 2022 this is being overridden by `.vector-feature-zebra-design-disabled body` which sets `overflow-y` back to `scroll` {F36989064, size=full} **What should have happened instead?**: The content underneath the modal should not be scrollable. ###AC [ ] The user is not able to scroll the content when an OOUI modal dialog is open.