Bug 56323 - EDITING: Hang while scrolling through document
Summary: EDITING: Hang while scrolling through document
Status: RESOLVED FIXED
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
Version:
(earliest affected)
Inherited From OOo
Hardware: x86-64 (AMD64) All
: medium major
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: Scrolling-PageUpDown
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Reported: 2012-10-23 14:24 UTC by Frantisek Erben
Modified: 2022-10-26 13:39 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:

Attachments
Test File (738.20 KB, application/zip)
2012-10-23 14:24 UTC, Frantisek Erben 		Details
Sample of process (805.21 KB, application/zip)
2012-10-23 14:25 UTC, Frantisek Erben 		Details
Screenshot of bad formated area (487.91 KB, image/png)
2012-10-23 14:25 UTC, Frantisek Erben 		Details
Screen record - for playback use VLC (quality is poor due filesize limit :-) ) (2.72 MB, video/mp4)
2012-10-23 14:29 UTC, Frantisek Erben 		Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Frantisek Erben 2012-10-23 14:24:23 UTC 
Created attachment 68948 [details]
Test File

Steps to Reproduce:
Open included TestFile, click into text in the right column (second row).
Keep press down arrow and move to the end of document.
Keep press up arrow and move on the top of document.

Actual Results:
While moving up hang for a several minutes in the middle of document - see included movie.

Expected Results:
Moving through document without any hangs.

Additional Information:
My Computer: iMac i5(3,1GHz), 12GB RAM, Mac OS X 10.7.5. 
There appear bad formated area without any specific reason - see screenshot.
I've attach some sample of process. 
I cannot reproduce it in LO 3.5.7, but everytime on 3.6.x

Workaround:
No.
Comment 1 Frantisek Erben 2012-10-23 14:25:12 UTC 
Created attachment 68950 [details]
Sample of process
Comment 2 Frantisek Erben 2012-10-23 14:25:48 UTC 
Created attachment 68951 [details]
Screenshot of bad formated area
Comment 3 Frantisek Erben 2012-10-23 14:29:20 UTC 
Created attachment 68952 [details]
Screen record - for playback use VLC (quality is poor due filesize limit :-) )
Comment 4 Roman Eisele 2012-10-23 15:23:30 UTC 
Comment on attachment 68948 [details]
Test File


(Fixed MIME type.)
Comment 5 Roman Eisele 2012-10-24 07:57:26 UTC 
Thank you very much for your bug report!

I can reproduce the delay with LibreOffice 3.6.3.1 (on Mac OS X 10.6.8 Intel)
when scrolling (by pressing the down arrow) through the right column of your sample document; and indeed, the delay is *really* long and *really* annoying, I completely agree to you.

However, my first tests showed two differences to your report:
1 When I have scrolled once comletely through the document (and back),
  further attempts to scroll through the document in the same way
  work much faster -- no delay anymore (?).
  The delay returns when I close the document and open it again.
2 When testing the same with LibreOffice 3.5.7.1, I get a long delay,
  too, at least at one point (IIRC the same strangely formatted area
  which is shown on your screenshot, attachment 68951 [details]).
  Maybe this delay is not as long as in 3.6.3.1, but there *is* such
  a delay, of course.

Maybe I did something wrong in testing. But could you please check yourself
if you can share my observations, or if there is really a difference?

(No offence! I just want us to check these points before confirming the bug and forwarding it to the developers, because it can be important for fixing the bug if there is really a regression [2] and if the delay appears only directly after the opening the document.)

Thank you very much!
Comment 6 Frantisek Erben 2012-10-24 08:48:20 UTC 
Hi Roman,

1) When I wait several minutes (~3 minutes) LO continue and after that I can scrolling through document without delay. After reopen file (without relaunch LO) delay appear again. In previous attepts I hadn't enough patience to wait :-), but it is really as you say, there is very, very long delay - so it is NOT infinite loop, but long delay. 

2) I've test it on LO 3.5.7.2 (build ID: 3215f89-f603614-ab984f2-7348103-1225a5b) but this problem occure if I scroll via mouse, not via up/down arrow.

So my ansver:
Q: There is really a regression?
A: No, but in LO 3.5 delay might occure less frequently.
Q: Appear the delay only directly after the opening the document.
A: Yes. After delay problem disappear until reopen the document.

When the delay occure (any version of LO), always appear formating bug similar as I attach to this bug in right column text.
Comment 7 tommy27 2014-10-25 12:57:38 UTC 
hang while scrolling document reproducible under Win7x64 using LibO 3.6.0.4, 4.3.2.2 and 4.4.0.0+ 

bug not reproducible with 3.5.7.2 and 3.6.0.4
so I confirm this very old 3.6.x regression.

needs bibisecting.
Comment 8 Matthew Francis 2014-12-04 02:17:43 UTC 
Unfortunately I can reproduce this reliably all the way back to 3.3.0. Rather than a regression, this is just a really old bug.

Removing Keywords:regression and Whiteboard:bibisectRequest
Comment 9 Gordo 2015-06-29 19:11:26 UTC 
If you set the page view to single page and zoom out to about 60% then pages 7 and 8 have images in frames off to the right of the page.  Images have their width set to a percentage that is relative to the paragraph area.  Just opening the image dialogue and switching between the tabs and cancelling caused the images to appear.  Existing ones will change if you go into the dialogue and switch tabs and come out.

Still hangs for a few minutes.

Windows Vista 64
Version: 4.4.4.3
Build ID: 2c39ebcf046445232b798108aa8a7e7d89552ea8
Comment 10 QA Administrators 2016-09-20 10:14:30 UTC Comment hidden (obsolete)
Comment 11 Telesto 2016-11-16 13:23:42 UTC 
I can confirm this bug on:
Version: 5.3.0.0.alpha1+
Build ID: bb50b1609abe83265311613db4a18e992dc666c8
CPU Threads: 4; OS Version: Windows 6.2; UI Render: default; Layout Engine: new; 
TinderBox: Win-x86@62-merge-TDF, Branch:MASTER, Time: 2016-11-14_23:25:25
Locale: nl-NL (nl_NL); Calc: CL

For me scrolling down is enough.
Comment 12 QA Administrators 2018-06-24 02:40:56 UTC Comment hidden (obsolete)
Comment 13 tommy27 2018-06-24 07:54:49 UTC 
still hangs in LibO 6.0.4
did not try 6.1.x or 6.2.x master.
Comment 14 QA Administrators 2019-06-25 02:42:34 UTC Comment hidden (obsolete)
Comment 15 QA Administrators 2021-06-25 03:18:10 UTC Comment hidden (obsolete)
Comment 16 Noel Grandin 2022-10-26 13:39:45 UTC 
In current master, I can no longer reproduce this