Try anchoring the images.
- When you create graphics with InDesign's tool, they are probably several objects, you have to group them first.
- Anchor the group into the text story at the correct place, but at least one line above where the images are visible.
Moved to InDesign EPUB forum.
I tried your suggestions(group, achor) and it still did not resolve my Kindle image issue.
I also tried exporting to EPUB format and the InDesign created images appear as drawn.
I conclude that have a Kindle ONLY related issue. (Tried in both PC Kindle and Amazon previewers).
I wonder what else can I try?
Can you clarify your statement... "but at least one line above where the images are visible?"