Code
dialog testq {
  size -1 -1 200 200
  edit "", 1, 5 5 190 120, read multi vsbar
}
on *:dialog:testq:init:*:var %a 20 | while (%a) { did -a testq 1 line $+ %a $+ $crlf | dec %a } | .timertest 20 1 echo -s $!time

Open the dialog with /dialog -m testq testq and a timer showing the time in status will start.
If you scroll the edit control, the timer stops triggering, which is not expected.
It doesn't happen if you scroll mIRC's window or dialog, only custom dialog.

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