I recently produced artwork for a leaflet with a gradient feather applied to the top right hand corner of the image to help legibility of the logo.
When I packaged it all for the printer, the high res PDF was fine. But when I open the IDML file the image has been changed completely, almost as if the the lighter corner had been applied overall the whole image washing it out completely. Exporting from the IDML to PDF produces the same washed out result so it's not 'screen draw' problem. I have never seen this before and wonder if it's a bug relating to applied effects when converting to IDML.
The printer produced the job and it was rejected by the client so it will have to be reprinted so there's a cost implication as well.
Any ideas as to why this would happen?
Creative Cloud 2015
InDesign 15.3 Release
3.5Ghz 6-Core Intel Xeon E5
32Gb 1866 mHz DDR3
could be well a bug with IDML.
Why did you submit the IDML instead of a print ready PDF?
Btw. by using an IDML file the printer's obligation is to check against a submitted print-ready PDF if all is well.
(But that is my very personal point of view. I'm not a lawyer.)
NEVER EVER send an IDML file to a printer. As already pointed out the recommended method is to send a PDF.
If for some reason you absolutely must send native files, then find a printer that will accept the INDD file.
If you're convinced it's a bug you can report it here: Feature Request/Bug Report Form