[Libreoffice-bugs] [Bug 131080] New: FORMATTING: Inserting a section with columns on a paragraph with line breaks, and one column per line, causes LO Writer to hang

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131080

            Bug ID: 131080
           Summary: FORMATTING: Inserting a section with columns on a
                    paragraph with line breaks, and one column per line,
                    causes LO Writer to hang
           Product: LibreOffice
           Version: 6.0.7.3 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: brunoveilleux at yandex.com

Description:
When dealing with a paragraph that contains 3 lines separated by line breaks
(not paragraph breaks), if I try to break it into exactly 3 columns by
inserting a section with the default settings (auto width and
evenly-distributed content), Writer hangs. Reproduces every time, but only with
this combination of content and settings.

Steps to Reproduce:
This seems to happen only in specific circumstances, so I’m attaching a test
file. I’ll call "test paragraph" the area at the top with this following text:
Préparation : 30 minutes
Cuisson : 10 minutes
Donne 36 tranches

Note that the first two lines end with a line break; the last line ends with a
paragraph break.

1. Select the test paragraph.
2. Go to Insert > Section, in the Columns tab.
3. Set the number of columns to 3. Leave other options unchanged (auto width
on, even distribution of content on; not sure how those appear in the English
interface).
4. Click Insert.

Actual Results:
LibreOffice maxes out a CPU core and hangs indefinitely.

Expected Results:
Columns should be inserted normally.


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
This bug seems extremely specific. If I make it 2 or 4 columns, it works. If I
untick either auto-width or even content distribution, it works. If I only
select two of the lines, it works (even if I make it 2 columns). If I change
the line breaks to paragraph breaks, it works.


Version: 6.0.7.3
Build ID: 1:6.0.7-0ubuntu0.18.04.10
Threads CPU : 4; OS : Linux 4.15; UI Render : default; VCL: gtk3; 
Locale : fr-CA (fr_CA.UTF-8); Calc: group

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