[libreoffice-users] Reading a crash report

LO (7.4.2.3, Windows 10) crashed when I tried to do a quick job with labels. To use sheet labels (Avery 
5160) in a non-standard orientation (Landscape (W>H) for the page, which means Portrait (H>W) for 
the label), I simply defined a table (10-col x 3-row) to fill the page. Then I had text in labels, and 
Images (arrows) anchored To_Paragraph (to the cell's text paragraph). That seemed fine until it crashed 
-- and after Recovery, most of the Images were Hidden.

So I tried to "unhide" the Hidden Images using a copy-to-another-document method recommended in a thread 
from 16.Oct.2020 at ask.libreoffice.org, and it crashed again -- at which point I turned my attention to the crash 
report <https://crashreport.libreoffice.org/stats/crash_details/341c843f-a4b5-47c0-966d-ba5829006c57>.  It 
shows:

Crash Reason    EXCEPTION_ACCESS_VIOLATION_READ
Crash Address   0x148
Crash Thread    0
Signature       IsSelectFrameAnchoredAtPara(SwPosition_const_&,SwPosition_const_&,SwPosition_const_&,DelContentType 
<https://crashreport.libreoffice.org/stats/signature/IsSelectFrameAnchoredAtPara(SwPosition%20const%20&,SwPosition%20const%20&,SwPosition%20const%20&,DelContentType)>

The record for Crash Thread 0 says:

        Module  swlo.dll
        Source  C:\cygwin64\home\buildslave\source\libo-core\sw\source\core\undo\undobj.cxx:1672

But that leaves me seriously lost regarding how to read this and contribute to a report, because 
there is no C:\cygwin64\ on the system!  Besides moving this job to LO on Ubuntu 20 (my next step), 
can someone advise how to read and report this LO/Windows bug?

John

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