The print-out below is from two runs on a Newsletter that I produce. Taco kindly told me to add  \loadmarkfile{page-mul}
to my input file some months ago to solve a problem with footnotes. I use an engine in TeXShop and I get the result 1) below (which is what I want) in the first example. I am happy to keep using this version of ConTeXt.

However, as a matter of interest, I installed LTMX in a separate folder and used a different TeXShop engine directed to that installation and when I do I get the bottom result 2). As you can see there is a lot of white space between the end of the text and the footnotes in that run. This happens with the articles in my newsletter that have footnotes. Can this be fixed?
Very best wishes and thanks for past help.
Charlie

1)

mtx-context     | run 1: luatex --fmt="/Users/charlesdoherty/OLDcontext-osx-64/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en" --jobname="Newsletter2019-20" --lua="/Users/charlesdoherty/OLDcontext-osx-64/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en.lui" --c:autopdf --c:currentrun=1 --c:fulljobname="./Newsletter2019-20.tex" --c:input="./Newsletter2019-20.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:purgeall --c:texmfbinpath="/Users/charlesdoherty/OLDcontext-osx-64/tex/texmf-osx-64/bin" "cont-yes.mkiv"

This is LuaTeX, Version 1.10.1 (TeX Live 2019) 
 system commands enabled.


2)

resolvers       | formats | executing runner 'run luametatex format': /Users/charlesdoherty/context-osx-64/tex/texmf-osx-64/bin/luametatex --jobname="Newsletter2019-20" --fmt=/Users/charlesdoherty/context-osx-64/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.fmt --lua=/Users/charlesdoherty/context-osx-64/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.lui cont-yes.mkiv --c:autopdf --c:currentrun=1 --c:directives="system.showerror" --c:fulljobname="./Newsletter2019-20.tex" --c:input="./Newsletter2019-20.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:purgeall --c:texmfbinpath="/Users/charlesdoherty/context-osx-64/tex/texmf-osx-64/bin"
This is LuaMetaTeX, Version 2.05.01