On Beta, there's an exception when opening any dialog/inspector in VE. The window doesn't open.
In particular, this prevents saving changes.
Uncaught TypeError: surface.getSelectionDirectionality is not a function at VeUiWindowAction.ve.ui.WindowAction.open at VeUiMWSurface.ve.ui.Surface.execute at VeUiMWLinkAction.ve.ui.MWLinkAction.open at VeUiMWSurface.ve.ui.Surface.execute at VeUiCommand.ve.ui.Command.execute at VeUiLinkContextItem.ve.ui.LinearContextItem.onEditButtonClick at OoUiButtonWidget.oo.EventEmitter.emit at OoUiButtonWidget.OO.ui.mixin.ButtonElement.onClick at HTMLAnchorElement.dispatch at HTMLAnchorElement.elemData.handle