[Adobe Digital Editions & v4.5.12.112]: Some options are not visible and not working in reading wind

Environment: Desktop
OS: Windows 11
App Version: 4.5.12.112

Repro Steps:

• Deploy 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

• 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)..

Observations:

Some options are not visible and not working in reading window when we apply contrast themes.