Bug: Image Occlusion not working OS Catalina?

When I go to preview or study a card with the built-in/default Note Type “Image Occlusion” Card, I get a blank card–nothing appears. In the Browser I can see the image in each occulsed card–with the rectangle boxes over the text. (The same issue occurs when I try to import someone else’s image occlused flashcards that uses the builtin basic Image Occlusion note type, such as this one [Anatomy 219 - 4.02 Spinal Cord - AnkiWeb].

Anki Version: Version ⁨23.10.1 (fac9e0ee)⁩
Python 3.9.15 Qt 5.14.2 PyQt 5.14.1
OS: OS Catalina on Macbook pro 2012

This is what I am doing. Any thoughts?
Adding an Image for Image Occlusion

  1. Open the Add Screen: Launch Anki and open the Add screen.
  2. Select Note Type: Click on “Type” and choose “Image Occlusion” from the list of built-in note types.
  3. Load an Image:
  • Click on “Select Image” to load an image file from your computer’s hard drive.
  • Alternatively, if you have an image copied to your clipboard, click on “Paste image from clipboard”.

Adding Image Occlusion (IO) Cards

  1. IO Editor: After loading an image, the IO editor will open.
  2. Choose Shapes: Click on the icons on the left to add shapes to your image. You have three options:
  • Rectangle
  • Ellipse
  • Polygon
  1. Select IO Mode: Choose between two IO modes for each note:
  • Hide All, Guess One**: All areas are hidden, and only one area at a time is revealed during learning.
  • Hide One, Guess One**: Only one area at a time is hidden and will be revealed during learning; the other areas remain visible.
  1. Add Cards: Once you’re done adding shapes and selecting the mode, click on the “Add” button at the bottom of the screen. Anki will create a card for each shape or group of shapes you’ve added.

A workaround can be found here: Possible occulusion issue on ver 23.10, and the solution

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