When creating custom pin markers, no images uploaded to the "images" section appear.
Only images that were uploaded as account avatars appear in the custom pin creation dropdown for image selection.

Initially thought there is some issue with size, but none of that mattered after testing wide range.
Very weird and unproductive.

1. no images from image gallery can be selected for custom pin
2. Only images uploaded as account avatars appear in the drop down selection when creating custom pin