Bug 156169 - Trackpad scroll choppy on displaying formulas
Summary: Trackpad scroll choppy on displaying formulas
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
7.1.0.0.alpha0+
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords: bibisected, bisected, regression
Depends on:
Blocks: Scrolling-PageUpDown Formula-Object
  Show dependency treegraph
 
Reported: 2023-07-05 13:12 UTC by Stéphane Guillou (stragu)
Modified: 2025-11-06 03:12 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:


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Description Stéphane Guillou (stragu) 2023-07-05 13:12:04 UTC
Steps:
1. Open attachment 188162 [details]
1. Using trackpad scroll, scroll down 1 page and back to the top of the document, fast. Repeat many times.
I see the canvas having hiccups on the top section's formulas since 7.1, but not in 7.0.

Bibisected with linux-64-7.1 repository to first bad commit c391d02248a86bfc4a57448859eaf70403a365a7 which points to core commit:

commit d336e6c26012255015d3fc0caf8e7fafe14bd8f2
author	Daniel Arato (NISZ) <arato.daniel@nisz.hu>	Mon Aug 24 11:05:17 2020 +0200
committer	László Németh <nemeth@numbertext.org>	Fri Aug 28 13:13:58 2020 +0200
tdf#69647 sw layout: fix line spacing with inline pictures
Line height is now based on (the biggest) font size in the
line rather than on the size of the tallest object there,
according to ODF and like MSO does.
Note: handling of first paragraph line is still different.
Co-authored-by: Attila Bánhegyi (NISZ)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/101272

Daniel and Attila, can you please have a look?
Comment 1 Stéphane Guillou (stragu) 2023-07-05 13:21:39 UTC
Using Ubuntu 20.04 with GNOME 3.36.8 + Wayland.

Present in 7.1, 7.2, 7.3.
Since 7.4, scrolling choppiness for this document got significantly worse for me.
Still terribly sluggish in a recent master build:

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: ec60d354359067f8c5c686ef2239ee705916de43
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-AU (en_AU.UTF-8); UI: en-US
Calc: threaded

Marking as new based on bibisect.
Comment 2 QA Administrators 2025-11-06 03:12:53 UTC
Dear Stéphane Guillou (stragu),

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)


If you want to do more to help you can test to see if your issue is a REGRESSION. To do so:
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