We were not able to reproduce it on our side. After you uploaded an Avatar image, you select Content->Images and there you can see all of the images in the libraries. The Default library or the library where you choose to store your image is on the right side of the Images page. When you select it, the uploaded images should be there. For your convenience I'm attaching a sample video
demonstrating the default behavior we're observing, please do not hesitate to let us know if we might be missing a step in reproducing the problem.
All the best,
the Telerik team
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