https://bugs.documentfoundation.org/show_bug.cgi?id=146597

            Bug ID: 146597
           Summary: Writer stops responding when a group of shapes is
                    anchored to character
           Product: LibreOffice
           Version: 7.4.0.0 alpha0+ Master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: [email protected]
          Reporter: [email protected]

Description:
The patch for bug #141220 (fix textbox popped out of off-page shape) introduced
a lot of issues in the positioning of groups of shapes to the point that it is
now impossible to maintain flowcharts position in Writer. While I was
investigating the bug #145282, I reproduce this one.

Here, repositioning the group to its anchor hinders the rendering when the
first line or the group is selected. I just cannot display the bottom of the
page. With the safe mode turned off, this document makes the software stop
responding.

This bug does not affect version 7.2.2.2. I guess it appeared in version 7.2.3,
when the patch changed the calculation for the position of groups.

Steps to Reproduce:
1. Open the document named "LibreOffice stops responding".
2. Select either the first line or the group.
3. Trying moving the view to the bottom of the page.

Actual Results:
Writer lags and hangs the view while the group seems to have several ghost
positions. In some cases, Writer stops responding.

Expected Results:
The positioning of the group should not prevent the view, the software should
have a lag-free rendering.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
This bug can also be reproduced on a new document by creating a complex group
anchored to character or paragraph, changing the vertical position "From
bottom" then edit top wrap.

I would be grateful if you could remove the patch corresponding to the bug
#141220 given the many issues it causes: the anchoring of group containing
complex shapes (lines and textboxes) has been messed up badly since it was
added, and my attempts to find a workaround have all failed (I only found more
issues).

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