The font is the default:
\setupbodyfont [modern, 12pt] % modern o cmr, 11pt
I use Linux (arch derivative).
Xavier
On Fri, 11 Aug 2023 21:38:00 +0200
"Xavier B."
If you run
\starttext
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. $\overbar{OA} = 4,2$ \stoptext
Then the overbar has the bar in a very long altitude. Can you please, see the output attached.
Thanks in advance, Xavier
PS: I use context version:mtx-context | ConTeXt Process Management 1.04 mtx-context | mtx-context | main context file: /usr/share/texmf-dist/tex/context/base/mkiv/context.mkiv mtx-context | current version: 2023.03.10 12:15 mtx-context | main context file: /usr/share/texmf-dist/tex/context/base/mkxl/context.mkxl mtx-context | current version: 2023.03.10 12:15