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<body><span class="vcard"><a class="email" href="mailto:albrecht.mueller@astrail.de" title="Albrecht Müller <albrecht.mueller@astrail.de>"> <span class="fn">Albrecht Müller</span></a>
</span> changed
<a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Inadequate error handling in pie charts UI: EDITING the data range can cause the diagram to disappear"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=118040">bug 118040</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">CC</td>
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<td>albrecht.mueller@astrail.de
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<td style="text-align:right;">Ever confirmed</td>
<td>1
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>UNCONFIRMED
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<b><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Inadequate error handling in pie charts UI: EDITING the data range can cause the diagram to disappear"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=118040#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Inadequate error handling in pie charts UI: EDITING the data range can cause the diagram to disappear"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=118040">bug 118040</a>
from <span class="vcard"><a class="email" href="mailto:albrecht.mueller@astrail.de" title="Albrecht Müller <albrecht.mueller@astrail.de>"> <span class="fn">Albrecht Müller</span></a>
</span></b>
<pre>@Jacques Guilleron: After the loss of the diagram I spent some time to analyse
the problem and found out how I can fix the problem and avoid the loss of data.
I think my solution is roughly equivalent to your solution.
I described the experience of a user who does not have this knowledge: You do a
little change, the diagram is gone, no way to undo the change. The key problem
is that you do not notice that actually the diagram is still there but you
don't see it. If you are lucky you may notice that some parts of gridlines are
missing. If View -> Gridlines for Sheet if off you cannot see this hint.
>From a pure technical point of view there is no real data loss and you can undo
the change. On the other hand a user may not be aware that the invisible
diagram is still there. Therefore this user is likely to do actions that cause
the loss of data.</pre>
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