FIRST

I don't believe the undo button can undo everything - mostly just typing actions (and perhaps those are even character by character?)
What were you trying to "undo"?

from jay:
Yes. I figured that out. Most of time it works fine with typing steps. What
I was having problem was that if I undo when I change to "multiple choice"
to "Short answer" or vice versa, then clicking undo button somehow remove
question text.

Resubmit after fire

Sandeep, this would be good to look at.

In reply to comment 2:

Undo/Redo buttons or equivalent Edit menu items are not activated when a
question's type is changed. But, when the question type is manually
changed from one type (say multiple choice) to another (say True/False)
and back, I did not find any text missing, either from the prompt or
from the choices.

I do not know if we decided to have "undo" functionality for even
question type changes. My opinion is that such a functionality can be
added at post-prototype stage, if we deem it necessary.

Please comment.

Original Bugzilla ID was 3866