When moving mouse over the simple_xfa.pdf file we receive:

Received signal 11 SEGV_MAPERR 000000000008
#0 0x564ab203ca5c base::debug::StackTrace::StackTrace()
#1 0x564ab203c5c1 base::debug::(anonymous namespace)::StackDumpSignalHandler()
#2 0x7fd434d4e0c0 <unknown>
#3 0x564ab5d86052 CPDF_LinkList::GetPageLinks()
#4 0x564ab5d862e5 CPDF_LinkList::GetLinkAtPoint()
#5 0x564ab5cd4dc4 FPDFLink_GetLinkAtPoint
#6 0x564ab5ccec16 chrome_pdf::PDFiumPage::GetCharIndex()
#7 0x564ab5cbeabc chrome_pdf::PDFiumEngine::GetCharIndex()
#8 0x564ab5cbdba6 chrome_pdf::PDFiumEngine::OnMouseMove()
#9 0x564ab5cbd31a chrome_pdf::PDFiumEngine::HandleEvent()
#10 0x564ab5cb0798 chrome_pdf::OutOfProcessInstance::HandleInputEvent()
#11 0x564ab1ce89e4 pp::InputEvent_HandleEvent(