Bug 149298 - LibreOffice Writer has messed up text using TrueType fonts after changes in the sentence.
Summary: LibreOffice Writer has messed up text using TrueType fonts after changes in t...
Status: RESOLVED WORKSFORME
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
7.3.2.2 release
Hardware: x86-64 (AMD64) Windows (All)
: medium trivial
Assignee: Not Assigned
URL:
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Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-25 22:15 UTC by Joseph Barrow
Modified: 2022-06-07 06:13 UTC (History)
2 users (show)

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Description Joseph Barrow 2022-05-25 22:15:25 UTC
Description:
As I type my text in Writer (Version: 7.3.2.2 (x64) / LibreOffice Community) and performs edits I have observed that text is messed up at the tops of each line at each letter and leaving artifacts of previous or deleted letters, numbers, and symbols. Sometimes scrolling up and down will refresh the lines and view as it is supposed to and sometimes not. If I send this to the printer, the artifacts print. If I save the file and reopen it after reopening Writer, there are no artifacts. If I export to PDF or Epub, there are no artifacts.

I generally use TrueType fonts, but this is also seen with OpenType and standard system fonts. This is distracting, more than anything else, and it makes for a usability issue as it tends to add up over lines and makes for readability issues then.

Steps to Reproduce:
1. Type something in a long sentence with 10+ words.
2. Go back and edit by changing words, spaces, punctuation, symbols and so on.
3. Observe.

Actual Results:
The top quarters of the text are obfuscated and doesn't print on the screen as expected.

Expected Results:
Text should be clear and legible in all parts of the lettering and during all edits.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Version: 7.3.2.2 (x64) / LibreOffice Community
Build ID: 49f2b1bff42cfccbd8f788c8dc32c1c309559be0
CPU threads: 2; OS: Windows 10.0 Build 19044; UI render: Skia/Raster; VCL: win
Locale: en-US (en_US); UI: en-US
Calc: threaded
Comment 1 Rangarajan 2022-05-26 04:12:48 UTC
Version: 7.4.0.0.alpha0+ / LibreOffice Community
Build ID: 465c3ad95059f0efa13c8027f7383c4d20a5b2ff
CPU threads: 4; OS: Linux 5.4; UI render: default; VCL: gtk3
Locale: en-IN (en_IN); UI: en-US
Calc: threaded

Actual Results:
Text should be clear and legible in all parts of the lettering and during all edits.

Expected Results:
Text should be clear and legible in all parts of the lettering and during all edits.

No reproduce
Comment 2 Scott Clewell 2022-06-05 23:55:00 UTC
Hello Joseph,

Thank you for reporting the bug, but I can't reproduce this.

Unfortunately without clear steps to reproduce it, we cannot track down the origin of the problem.
Please provide a clearer set of step-by-step instructions on how to reproduce the problem.
I have set the bug's status to 'NEEDINFO'. Please change it back to 'UNCONFIRMED' once the steps are provided
Comment 3 Buovjaga 2022-06-06 16:38:10 UTC
Does it make a difference, if you deactivate Tools - Options - LibreOffice - View - Use Skia for all rendering ?
Comment 4 Joseph Barrow 2022-06-06 17:01:22 UTC
I have tried that now (deactivate Skia) and wrote a few paragraphs of text. Yes, it does help and I didn't realize that it was there - I poke around in the settings for other things. It seems to me that this is the cause of the problem, although why, I couldn't say. I am not familiar with Skia's purpose and would hesitate to comment further, other than to confirm that it helps to deactivate this. Thank you.
Comment 5 Buovjaga 2022-06-07 06:13:12 UTC
(In reply to Joseph Barrow from comment #4)
> I have tried that now (deactivate Skia) and wrote a few paragraphs of text.
> Yes, it does help and I didn't realize that it was there - I poke around in
> the settings for other things. It seems to me that this is the cause of the
> problem, although why, I couldn't say. I am not familiar with Skia's purpose
> and would hesitate to comment further, other than to confirm that it helps
> to deactivate this. Thank you.

Thanks for testing. Skia is a graphics engine that is also used by web browsers like Chrome and Firefox. From the user's standpoint, it can improve the performance of the interface.

Skia was added to LibreOffice in 2019 and the integration is still getting polished. You might check the latest unstable version with Skia activated and see, if it is any better: https://dev-builds.libreoffice.org/daily/master/current.html Win-x86_64@tb77-TDF. The version installs separately from your stable one.