Comment 31 for bug 168695

Tested with r12969
on linux mint 15 32bit.

Undo and redo stops working after
right clicking and choosing delete.

Open edit > undo history...
and draw a couple of objects.

In the undo history, click on an undo state
after [unchanged] so that both undo and redo
can be tested at the same time.

Right click on the canvas and choose delete
it happens with or without and object selected.

Now both undo and redo have stopped working,

To get it working again,
click on the canvas once with any tool.