[Libreoffice-bugs] [Bug 121323] New: Crash dragging button after un-grouping compound group

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=121323

            Bug ID: 121323
           Summary: Crash dragging button after un-grouping compound group
           Product: LibreOffice
           Version: 6.2.0.0.alpha1+ Master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: jim.avera at gmail.com

Description:
A crash occurs while dragging a button over a "frozen" spreadsheet row under
certain circumstances.

This happens every time with the attached spreadsheet ("crash.ods"), if a
(unrelated) group of buttons is first un-grouped.  Somehow the act of
un-grouping the group makes a later button-drag crash.   FWIW, the group is a
compound group created by grouping a row of buttons, then selecting that group
and another button and grouping the combination.

The demo was derived from a production spreadsheet developed using earlier LO
versions, so the crash might be due to backwards-compatibility issues (just
guessing).

Steps to Reproduce:
1. Open attached spreadsheet "crash.ods" (Disable macros if prompted)
2. View->Toolbars->Form Design: Checked
3. In the floating Form Design toolbar, 
     click the icon to enter Design Mode 
4. Click in the YELLOW button, to select the large group
5. Rightclick->Group->Ungroup
6. Click somewhere else (de-selects the buttons)
7. Drag the GREEN button down towards the large group
(crash occurs when it passes the frozen row)


Actual Results:
Crash

Expected Results:
No crash


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.2.0.0.alpha1
Build ID: ff46ad24d1d3cbcea45895520483ed1fd4ff488b
CPU threads: 12; OS: Linux 4.15; UI render: default; VCL: gtk3; 
Locale: en-US (en_US.UTF-8); Calc: threaded

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