[Libreoffice-bugs] [Bug 124652] New: gtk3_kde5: Hang/crash when using folderpicker from Java extension

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=124652

            Bug ID: 124652
           Summary: gtk3_kde5: Hang/crash when using folderpicker from
                    Java extension
           Product: LibreOffice
           Version: 6.1.5.2 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: graphics stack
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: m.weghorn at posteo.de

Created attachment 150659
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150659&action=edit
Sample extension to reproduce the issue

Using the folder picker from a Java extension causes LibreOffice to hang when
using the gtk3_kde5 VCL plugin.

Steps to reproduce:

0) use KDE Plasma
1) install the attached demo extension
2) start LibreOffice Writer with the gtk3_kde5 VCL plugin:
   SAL_USE_VCLPLUGIN=gtk3_kde5 libreoffice --writer
3) click the "Test Extension" -> "Save (new)" menu item
   -> a native Qt folder picker appears
4) select any directory and click "OK"

Result: LibreOffice hangs

using e.g. LibreOffice from Debian testing:

Version: 6.1.5.2
Build ID: 1:6.1.5-2
CPU threads: 4; OS: Linux 4.19; UI render: default; VCL: gtk3_kde5; 
Locale: en-GB (en_GB.UTF-8); Calc: group threaded

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