crash calling QPlainTextEdit::appendHtml

Crash happens, when I try to call QPlainTextEdit::appendHtml with invalid symbols.

Compiler used: MSVC2019

Platform Window 10

Call trace:

5 QWindowsFontDatabase::createEngine qwindowsfontdatabase.cpp 1188 0x7ffa8ef6eeca
6 QWindowsFontDatabase::fontEngine qwindowsfontdatabase.cpp 764 0x7ffa8ef6c94b
7 loadSingleEngine qfontdatabase.cpp 790 0x7ffa8ec50bf7
8 loadEngine qfontdatabase.cpp 820 0x7ffa8ec50ef1
9 QFontDatabasePrivate::findFont qfontdatabase.cpp 2407 0x7ffa8ec4c66d
10 QFontEngineMulti::loadEngine qfontengine.cpp 1786 0x7ffa8ec731c4
11 QFontEngineMulti::ensureEngineAt qfontengine.cpp 1766 0x7ffa8ec729d6
12 QFontEngineMulti::stringToCMap qfontengine.cpp 1879 0x7ffa8ec708bd
13 QTextEngine::shapeText qtextengine.cpp 1487 0x7ffa8ed74e81
14 QTextEngine::shape qtextengine.cpp 1866 0x7ffa8ed6c5c7
15 QTextLine::layout_helper qtextlayout.cpp 1829 0x7ffa8eddf9e8
16 QTextLine::setLineWidth qtextlayout.cpp 1580 0x7ffa8eddddf1
17 QPlainTextDocumentLayout::layoutBlock qplaintextedit.cpp 391 0x7ffa901de02f
18 QPlainTextDocumentLayout::blockBoundingRect qplaintextedit.cpp 201 0x7ffa901dd3b8
19 QPlainTextEditControl::blockBoundingRect qplaintextedit.cpp 598 0x7ffa901df101
20 QWidgetTextControlPrivate::_q_updateBlock qwidgettextcontrol.cpp 1410 0x7ffa90250501
21 QWidgetTextControl::qt_static_metacall moc_qwidgettextcontrol_p.cpp 293 0x7ffa9023b2fa
22 doActivate<0> qobject.cpp 3858 0x7ffa888f9d3b
23 QMetaObject::activate qobject.cpp 3904 0x7ffa888e3288
24 QAbstractTextDocumentLayout::updateBlock moc_qabstracttextdocumentlayout.cpp 208 0x7ffa8ec024ea
25 QPlainTextDocumentLayout::documentChanged qplaintextedit.cpp 348 0x7ffa901ddc17
26 QTextDocumentPrivate::finishEdit qtextdocument_p.cpp 1225 0x7ffa8ecfe48b
27 QTextDocumentPrivate::endEditBlock qtextdocument_p.cpp 1205 0x7ffa8ecfe2d3
28 QTextCursor::endEditBlock qtextcursor.cpp 2536 0x7ffa8ecc591a
29 QWidgetTextControlPrivate::append qwidgettextcontrol.cpp 3228 0x7ffa902503b3
30 QWidgetTextControl::appendHtml qwidgettextcontrol.cpp 3241 0x7ffa90241d63
31 QPlainTextEditPrivate::append qplaintextedit.cpp 3011 0x7ffa901e2caf
32 QPlainTextEdit::appendHtml qplaintextedit.cpp 3072 0x7ffa901d9773