It's possible that nobody has ever tried to use a DSI III Pro with the INDI driver before.
The data that you collected is excellent. After a little googling, it looks like the DSI III Pro uses the ICX285AL, which an active pixel array of 1360x1024. Even the total pixel array (1434x1050) doesn't quite match what the logs seem to indicate. I'll have to look at the code to be sure. But, I suspect that you're on the right track that the issue is the driver trying to download more data than is available.