Update:
I scanned a design (hand draw plan) with lots of pixels (12000x19000)
Placed the tif into a layout... showed a big black box
Saved as PDF, Looked ok, but would not print
Then split the file into 3 strips and rotated so that the width was 4000 pixel. Placed the 3 strips into layout, looked and printed fine.
To me, that suggests (tho probably not conclusively) that this 4048 pixel limitation may still be present.
Duane
Visual Frontiers
AC3.14 - AC29
:|: Enscape4.16:|:TwinMotion
DellXPS 4.7ghz i7:|: 8gb GPU 1070ti / Alienware M18 Laptop