I have came accros a strange behavior of ArcMap 10.4.1 when exporting map from ArcMap with ArcGIS for Server map service (Dynamic).
When I try to export e.g. A3 PDF (or PNG) with 300 dpi, the map service image does not appear in PDF/PNG. Lowering the dpi leads to printing just part of the data in view.
Here are some facts:
1) it is probably not a Server related issue, the map service has max image size set to huge values (8000 to 8000)
2) I found the problem with 10.4.1 ArcMap and 10.4.1 Server an reproduced also with 10.4.1 ArcMap using 10.2 Server
3) map is exported correctly when using Export task in REST
4) map is exported correctly when using ArcMap 10.3.1 or 10.5 (with 10.2 Server)
So it seems to be only 10.4.1 ArcMap issue.
I have not found it in bugs or issues addresed with this version. Or have I missed it?