Comment 6 for bug 246354

It seems that the value of "kill-whole-line" may cause the update function to eat the lines following the "last update" line.
If this value is non-nil. the update function kills the "last update" line including the end-of-line character and generates a new "last update" line as a prefix to the following line.

Unfortunately I do not know enough of e-lisp to be able to fix this.

Thanks,

Paul Huygen