Bug 125802 - Paragraphs and header footers with complex font mix (CJK and Western) poorly performing scroll and page movements
Summary: Paragraphs and header footers with complex font mix (CJK and Western) poorly ...
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
(earliest affected)
Hardware: All All
: medium normal
Assignee: Not Assigned
Depends on:
Blocks: Scrolling-PageUpDown Page-View
  Show dependency treegraph
Reported: 2019-06-08 14:47 UTC by V Stuart Foote
Modified: 2021-06-09 13:39 UTC (History)
4 users (show)

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Crash report or crash signature:


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Description V Stuart Foote 2019-06-08 14:47:48 UTC
Ongoing from bug 125624 working with attachment 151516 [details] pagination with paragraphs and headers/footers composed of mixed CJK and Western text runs performs poorly. The UI will stop responding to scroll and page motions, and the <Ctrl>+G "Go to page" dialog will stop responding.  Actual page composition becomes corrupted.

Changing zoom level does not clear the corrupt page layout. Nor does changing between view modes (Single page, multi-page, book view).

Pagination on initial opening is good, but advancing into the document (scroll or page dn) and then backing up starts to degrade.
Comment 1 V Stuart Foote 2019-06-08 14:53:21 UTC
On Windows 10 Home 64-bit en-US with
Windows 10 Home 64-bit en-US (1809) with TB39
Version: (x86)
Build ID: 9870ff897f088563426bee9567dd9cb722c2b929
CPU threads: 4; OS: Windows 10.0; UI render: GL; VCL: win; 
Locale: en-US (en_US); UI-Language: en-US
Calc: threaded
Comment 2 QA Administrators 2021-06-09 03:47:35 UTC Comment hidden (obsolete)
Comment 3 V Stuart Foote 2021-06-09 13:39:31 UTC
With attachment 151516 [details] and STR of comment 0, no longer seeing a degraded response to mouse wheel scrool, sidebar Navigator page, or scrollbar movements. Go-to page movements are crisp. Keyboard PgDn/PgUp are acceptable, with some change in scroll speed depending on the content of the page.

=> WFM