Bug 87521 - Font redrawing bug when doing bulk restyling of text or removing text so that positions of content shift
Summary: Font redrawing bug when doing bulk restyling of text or removing text so that...
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
4.3.4.1 release
Hardware: Other macOS (All)
: low normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: Font-Rendering
  Show dependency treegraph
 
Reported: 2014-12-20 06:18 UTC by social
Modified: 2023-05-28 17:39 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


Attachments
screenshot example of the text redrawing glitch (10.38 KB, image/png)
2014-12-20 06:18 UTC, social
Details

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Description social 2014-12-20 06:18:52 UTC
Created attachment 111070 [details]
screenshot example of the text redrawing glitch

I've seen this several times so figured I'd report it. I'm testing on a MacBook Pro Retina, Fall 2013 model, running OS X 10.9.5 Mavericks.

This happens randomly for me, and I think only when I have more than one page.

If I select all document text, and reformat the styling for all of it, occasionally this bug will appear—it looks like the top part of the letters are slightly above where they should be, but there is no gap. It's like the top and bottom are being redrawn separately and are slightly off.

It also happens (again, seemingly randomly), if I remove some text from the middle of a multi-page document causing all text below to shift up, I will see this on multiple lines of text. If I click-drag over these effected lines, they will start readjusting themselves and move a few pixels vertically as they are highlighted. Typically that slicing glitch is still present.

The only way to get rid of this glitch once it appears is to scroll the document so the effected text is off-screen. If you then scroll back to where the effected text was, it looks correct. Can't reproduce it on-demand all the time, but it happens frequently so should be easy to reproduce if you just mess with a document for a few minutes.

It's only a cosmetic thing and is easily fixed by scrolling, but should be looked into.

thanks
Comment 1 Alex Thurgood 2014-12-31 12:04:55 UTC
Confirming, but redraw bugs have been around a long time in LO, perhaps even back to OOo days, so pinning this down will not necessarily be easy.
Comment 2 QA Administrators 2016-01-17 20:04:04 UTC Comment hidden (obsolete)
Comment 3 QA Administrators 2017-03-06 14:20:11 UTC Comment hidden (obsolete)
Comment 4 QA Administrators 2019-12-03 14:27:47 UTC Comment hidden (obsolete)
Comment 5 QA Administrators 2021-12-03 04:33:23 UTC
Dear social,

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information from Help - About LibreOffice.
 
If the bug is NOT present, please set the bug's Status field to RESOLVED-WORKSFORME and leave a comment that includes the information from Help - About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular meaning that is not 
appropriate in this case)


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