clipboard: copy paste between documents doesn't work

[eszkadev]

Describe the Bug

Problem with copy from one document instance and paste to the another one.

Steps to Reproduce

broken-save.odt

1. Use two browsers (I used Firefox and Chrome on linux)
2. Open attached document in both
3. Copy shape from one, try to paste in the second

Expected Behavior

Shape is pasted correctly.

Actual Behavior

Shape is not pasted. Browser logs:

Paste
global.js:562 Transfer between servers
	"http://xxxxxxx:9980/cool/clipboard?WOPISrc=http%3A%2F%2Fxxxx%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2Fyyyyyyy&ServerId=3c938e5a&ViewId=5&Tag=dc4f9dd43342b329" vs. 
	"/cool/clipboard?WOPISrc=http%3A%2F%2Fxxxxxx%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2Fyyyyyyy&ServerId=3c938e5a&ViewId=4&Tag=c1b6e7c85095a7bf"
global.js:562 DownloadProgress.show
...
{"id":"progress","type":"progressbar","value":100,"maxValue":100}} 
global.js:562 1728025116011 INCOMING: jsdialog: {"id":"snackbar","jsontype":"dialog","type":"snackbar","action":"close"} 
global.js:562 up-load done, now paste
global.js:562 1728025116012 OUTGOING: uno .uno:Paste 

More interesting is core log with exception:

warn:xmloff:21273:21254:xmloff/source/text/XMLTextListAutoStylePool.cxx:163: getStyleFamilies() from XModel failed for export!
warn:xmloff:21273:21254:xmloff/source/style/impastpl.cxx:368: Adding duplicate family graphic with mismatching mapper ! P25SvXMLExportPropertyMapper 28XMLShapeExportPropertyMapper
warn:xmloff:21273:21254:xmloff/source/style/impastpl.cxx:368: Adding duplicate family presentation with mismatching mapper ! P25SvXMLExportPropertyMapper 28XMLShapeExportPropertyMapper
warn:legacy.osl:21273:21254:xmloff/source/style/xmlexppr.cxx:856: special item not handled in xml export
warn:xmloff:21273:21254:xmloff/source/core/xmlerror.cxx:163: An error or a warning has occurred during XML import/export!
Error-Id: 0x60040004
    Flags: 6 ERROR SEVERE
    Class: 4 API
    Number: 4
Parameters:
Exception-Message: com.sun.star.lang.IllegalArgumentException: "at /media/dev/co-24.04/workdir/UnoApiHeadersTarget/udkapi/normal/com/sun/star/lang/IllegalArgumentException.hdl:19"

warn:legacy.osl:21273:21254:sax/source/expatwrap/saxwriter.cxx:136: cached Sequence not written
warn:legacy.osl:21273:21254:sfx2/source/doc/sfxbasemodel.cxx:3022: SfxBaseModel::IsInitialized: this should have been caught earlier!
warn:xmloff.core:21273:21254:xmloff/source/core/xmlimp.cxx:949: DBG_UNHANDLED_EXCEPTION in setTargetDocument exception: com.sun.star.lang.NotInitializedException message: "at /media/dev/co-24.04/workdir/UnoApiHeadersTarget/udkapi/normal/com/sun/star/lang/NotInitializedException.hdl:24" context: SvxUnoDrawingModel
warn:svx:21273:21254:svx/source/xml/xmlexport.cxx:216: DBG_UNHANDLED_EXCEPTION in SvxDrawingLayerImport exception: com.sun.star.xml.sax.SAXParseException message: "[ line 2]: Couldn't find end of Start Tag document
 at /media/dev/co-24.04/workdir/UnoApiHeadersTarget/offapi/normal/com/sun/star/xml/sax/SAXParseException.hdl:26"
    wrapped:  PublicId:  SystemId:  LineNumber: 2 ColumnNumber: 2010

Additional Context

I used COOL inside Nextcloud