https://bugs.documentfoundation.org/show_bug.cgi?id=144151

[email protected] changed:

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--- Comment #14 from [email protected] ---
I just stumbled across this and can confirm some of the behavior and offer some
additional information.

Our systems are all Linux/X with thin clients (remote displays).  I am just now
testing LO 24.8.3.  Before that we have been using 7.5.7, and the problem
doesn't exhibit there.  And in 24.8.3, when I have a blank spreadsheet, or one
with only a small number of cells, I see none of this.

But if I have a large spreadsheet in 24.8.3 and then select all and change the
font (with the pull-down selector), I notice multiple flickering drawing events
on the bottom status area of LibreOffice every time the cursor is moved from
one cell to another.  I turned the network speed way down to try and read what
it is saying, but it is still too fast.  The text and icons there are being
redrawn, maybe 10 times, and sometimes I see a progress bar as well for a tiny
fraction of a second.  It isn't causing any real performance issue for us in
real-world use at full network speed, but it is a curiosity and certainly shows
there is something inefficient/wrong.

It is very curious that this ONLY ever happens when the font is changed using
the pull-down menu.  If I change them by right clicking and Format Cells, it
doesn't do it.  I can also confirm that it is when selecting lines of cells and
not columns of cells that triggers the issue.

If I save the file when it is in this broken/contaminated state, then close it
and reopen it, the problem disappears.  It is only if I try to change fonts in
many cells, using the pulldown font menu, that it starts up again.

I hope this is helpful.

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