[Libreoffice-bugs] [Bug 129623] New: LibreOffice Calc Freezes (sometimes) On Copy, Paste, Selection

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=129623

            Bug ID: 129623
           Summary: LibreOffice Calc Freezes (sometimes) On Copy, Paste,
                    Selection
           Product: LibreOffice
           Version: 6.3.3.2 release
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: locrash at strikefc.com

Description:
This is not strictly a "here are the steps to reproduce it happens every time"
because it doesn't always happen but it happens enough - hourly, daily, weekly
to drive me away from using the program entirely

It may be related to this bug:
https://bugs.documentfoundation.org/show_bug.cgi?id=99623 as it seems the
symptoms are similar but the difference is that I and others in that thread are
not using "CLCL" but still have the same symptoms.

LibreOffice Calc Freezes and becomes unresponsive after a Copy/Paste related
operation.

Previous version of LO it was isolated to only when i was editing the contents
of an existing cell ( double clicking a cell and modifying the formula in the
formula text bar.) If i tried to copy something from that formula and repaste
it while editing another cells formula in the formula bar the whole program
would freeze and would never recover requiring a task manager shut down.


Steps I've tried:
- Upgrade LO to latest (6.3) version - This actually seemed to make things
worse. Prior to 6.3 crashing was fairly predictable when a specific copy/paste
action was done. After 6.3 it seems any C/P operation could trigger the fault
randomly.
- Update Java Runtime Environment (Was 11, Now 13)
- Turn off AntiAliasing
- Turn On Backup of Data
- Decrease interval for AutoRecovery of data (Since it seemed to be crashing
faster than it was saving recovery files even though the /backup folder is
filled with 0KB junk files)

As stated, now it is freezing/hanging up much more regularly and any Copy/Paste
related action seems to be able to trigger it even just copying cells to move
to a new column or even just to paste the format over.

Things to note:
LO is not completely dead. I can continue opening new instances of LO and it
will process them. They will simply also be frozen / not responsive once open.
So LO is able to work in the back but as the user I can not interact with any
of the windows.
If I try to take a screenshot of the LO window when it is the active window,
the system will not capture the screenshot. Other active windows have no issue.

Steps to Reproduce:
1. Copy
2. Paste
3. Freeze

Actual Results:
The entire Libre Office became unresponsive

Expected Results:
Pasted the data without issue and remained responsive


Reproducible: Sometimes


User Profile Reset: No



Additional Info:
One final thing to note is that these are very small files with no scripting
and in fact virtually no formulas. I also experience the issue on big files
with lots of formulas but right now the most recent freeze was using a 3000 KB
file with a .xls compatibility extension with zero formulas in the active sheet
only plaintext entered manually with some colored formatting. A second file
.ods with a single sheet was also opened at the time in a separate window of
size 19KB and zero total formulas, all plaintext and colored formatting.

Version: 6.3.3.2 (x64)
Build ID: a64200df03143b798afd1ec74a12ab50359878ed
CPU threads: 12; OS: Windows 10.0; UI render: default; VCL: win; 
Locale: en-US (en_US); UI-Language: en-US
Calc: threaded

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