Steps to reproduce:

• Create a 3D project
• In Content library - Textures, add 4KArrow and 4KCircle as images to the project
• Create two textures in Material Browser - Texture1 and Texture2
• Select Texture1 and in Properties view, set 4KArrow as a source for it
• Select Texture2 and in Properties view, add binding for source property to texture1.source
• -> In Material Browser, both textures show correct source image, as expected
• Select Texture1 and change the source image to 4KCircle
• -> In Material Browser, Texture2 still displays 4KArrow image, not expected.
• -> Property editor shows the correct source image preview for Texture2.
• Creating another material or texture updates the images for Texture2