Some options are not visible and not working in reading window while we apply contrast theme. Windows 11[Adobe Digital Editions & v4.5.12.112]Repro Steps:Deploy the latest OS on X64 device. Perform Windows and Store updates. Download the application from vendor site.Install the application.Launch the application.Open any sample book/pdf.Work with the options available in the toolbar like Go Back to Library, Create Bookmark, Show/Hide Navigation Panel, Change Page view, Find etc.Go to settings.Search for contrast themes and select "Choose a contrast theme".Apply Aquatic, Desert or Dusk contrast theme from the dropdown.Observation 1:Now go back to the application.Observe that the options in the toolbar are not visible when Contrast Themes (Aquatic, Desert, Dusk) are applied.Observation 2:Observe that the options in the toolbar are not working after changing to Contrast Themes (Aquatic, Desert, Dusk).Actual Result:Some options are not visible and not working in reading window when we apply contrast themes.