Topaz DeNoise AI 3.1.1 - Corruption of Images

Am using DeNoise AI in standalone mode.
Have tried v3.1.1 on some noisy iPhone JPG images with ‘Severe Noise’ option using the ‘auto’ setting. The resulting images contained patches of corruption, visible as vertical darkened ripples.
The previous version of DeNoise AI did NOT produce such ‘corruption’ in those same images.
Your feedback appreciated.

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