Linked Image Canvas Resampling Pixelated Issue
When a linked image canvas size greatly exceeds the image frame size, the linked image is pixelated in both the InDesign preview and the PNG export. JPG exports do not exhibit this issue.
Please note in the attached images two different linked PSD files. The file on left is cropped to the extent of the rasterized letter 'a'. In the file on the right, the rasterized 'a' has the same pixel dimensions as the first, but the Photoshop document canvas is much larger. This results in a poorly resampled PNG export.
Sami Gale commented
I'm having this issue too. I need to export as png. both in the preview and the export file they're pixellated. Seems to be a brrand new issue.