--- editors/libreoffice/files/patch-vcl_qt5_Qt5Instance.cxx	(nonexistent)
+++ editors/libreoffice/files/patch-vcl_qt5_Qt5Instance.cxx	(working copy)
@@ -0,0 +1,17 @@ 
+--- vcl/qt5/Qt5Instance.cxx.orig	2020-05-13 11:19:20 UTC
++++ vcl/qt5/Qt5Instance.cxx
+@@ -261,7 +261,13 @@ SalFrame* Qt5Instance::CreateChildFrame(SystemParentDa
+ SalFrame* Qt5Instance::CreateFrame(SalFrame* pParent, SalFrameStyleFlags nStyle)
+ {
+     assert(!pParent || dynamic_cast<Qt5Frame*>(pParent));
+-    return new Qt5Frame(static_cast<Qt5Frame*>(pParent), nStyle, m_bUseCairo);
++    SalFrame* pRet(nullptr);
++    bool bUseCairo = m_bUseCairo;
++    RunInMainThread([&pRet, pParent, nStyle, bUseCairo]() {
++        pRet = new Qt5Frame(static_cast<Qt5Frame*>(pParent), nStyle, bUseCairo);
++    });
++    assert(pRet);
++    return pRet;
+ }
+ 
+ void Qt5Instance::DestroyFrame(SalFrame* pFrame)