Dear Hans,
Here is a small example which shows a strange spacing in the aligned display
math mode.
The same code is OK in both inline mode and just display mode, but it is not
good in aligned mode.
I hope that it helps your fix .
Thank you.
Best regards,
Dalyoung
%%%%%
running luametatex version 2.03.3, ConTeXt ver: 2019.12.12, format: 2019.12.14
%%%%%
\starttext
\startitemize
\head inline formula:
$1001 \times 23 \equiv 1 \quad \pmod {3837}$
\head display mode
\startformula
1001 \times 23 \equiv 1 \quad \pmod {3837}
\stopformula
\head aligned display mode
\startformula\startalign[m=2]
\NC 2^7 \equiv \qquad \NC \pmod {341}, \NC 14^7 \equiv \qquad \NC
\pmod {341}, \NR
\NC 11^7 \equiv \qquad \NC \pmod {341}, \NC 3^7 \equiv \qquad \NC \pmod
{341}, \NR
\stopalign\stopformula
\startformula\startalign[n=3]
\NC 1001 \times 23 \NC \equiv 1 \quad \NC\pmod {3837} \NR
\NC \qquad \times 23 \NC \equiv \qquad \NC\pmod {3837} \NR
\stopalign\stopformula
\stopitemize
\stoptext
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