It doesn't appear in the undo list.
LO 22.214.171.124 in Debian Unstable.
Every editing action should be undo-able.
User Profile Reset: No
Undo in charts it's only possible while you are editing the chart. So when you quit from chart edit, undo for the charts it's not available.
How about an "undo changes to the chart"?
IMO this is not a bug, so you can request for an enhancement, on the second field of importance.
You can't confirm your own bugs. Moving it back to UNCONFIRMED until someone
else confirms it.
Well, let put it to NEW. As an enhancement, it makes sense...