Is it normal that after \setupcolumns[balance=no] the dividing line is not fully drawn in the case where the column at the left is shorter than the one to the right.
And furthermore that balance=no inserts a pagebreak, whereas balance=yes does not?
Below a minimal example.

Hans van der Meer

\setupcolumns[rule=on,balance=no]
\starttext
\startcolumns
	Short leftcolumn.
\column
	Long rightcolumn.
	Long rightcolumn.
	Long rightcolumn.
	Long rightcolumn.
	Long rightcolumn.
	Long rightcolumn.
	Long rightcolumn.
	Long rightcolumn.
\stopcolumns
\hairline
\startcolumns
	Long leftcolumn.
	Long leftcolumn.
	Long leftcolumn.
	Long leftcolumn.
	Long leftcolumn.
	Long leftcolumn.
	Long leftcolumn.
	Long leftcolumn.
\column
	Short rightcolumn.
\stopcolumns
\stoptext