[Kotahidev] Scroll bar is missing from Control>Manuscripts text view when Wax editor is expanded
Issue description; when navigating to Control>Manuscripts text view the scroll bar does not display in the Wax editor. The scroll bar is visible in the Production editor, but not the Manuscripts text view.
The scroll bar should always be visible in all cases (expanded and collapsed) where the manuscript content runs beneath the fold/bottom of the viewport in both the Manuscript text and Production editor
Example URL; http://kotahidev.cloud68.co/kotahi/versions/0f2059c8-88b6-4dd2-9ae8-2dcdba755623/decision