The following code:

\startMPpage[instance=doublefun]
  draw (0,0)--(100,0) dashed withdots;
\stopMPpage

When run through LuaMetaTeX produces a PDF about which Acrobat complains:

	The dimensions of this page are out-of-range. Page content might be truncated.

and Adobe InDesign cannot handle it at all (displays empty). 

The error message stays with

\startMPpage[instance=doublefun]
  draw (0,0)--(100,0)—(100,2) dashed withdots;
\stopMPpage

but disappears with

\startMPpage[instance=doublefun]
  draw (0,0)--(100,0)—(100,3) dashed withdots;
\stopMPpage


Additionally, on the Adobe forums I have been told:

	Also, the color space is device gray (not RGB or CMYK)

which might be a more generic problem with LMTX output, I don’t know. It might also be an Adobe problem. Previw.app on macOS handles the result without problems.

ConTeXt standalone:

This is LuaMetaTeX, Version 2.06.02 
open source     > level 1, order 1, name 'cont-yes.mkiv'
system          > 
system          > ConTeXt  ver: 2020.05.12 16:21 MKIV beta  fmt: 2020.5.16  int: english/english


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