https://bugs.documentfoundation.org/show_bug.cgi?id=159325

--- Comment #4 from ady <[email protected]> ---
I found the hidden chart by using Calc's menu View > Navigator (F5). The chart
itself remains hidden, but I can see the corners.

I guess that by "flickering" you mean that the chart remains hidden and that
the "only" way to make it visible in Calc is to click and hold the mouse's
button on it, which shows the chart for a second. You can still move or resize
the (hidden) chart.

Right-click on the (hidden) chart area > Edit. That shows the chart, until we
exit from edit mode.

While in edit mode for the chart, I can save the file as a new XLSX and when
reloading it the chart is visible, even when not in edit mode.

I am tempted to ask which precise attribute is applied in Excel for the chart
to be hidden, in order to test for compatibility or support in Calc for an
equivalent setting/attribute. But...

(In reply to Franz from comment #0)
> Bonus Excel handles this in a corrupt state too. No Editing or Undoing
> possible.

If the XLSX file was created by Excel, and Excel itself has a problem with this
file (or with the chart), IDK how exactly Calc should know how to handle this
in some "better" way. I guess this makes Calc "compatible" (in some way) with
what happens in Excel.

For any kind of improvement, we would need to know which exact attribute Calc
is supposed to match or emulate or be compatible with.

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