https://bugs.documentfoundation.org/show_bug.cgi?id=123196
--- Comment #15 from Matt K <matt...@gmail.com> --- I repro the hang on latest master. I took an ETW trace on Windows and got the following results: Most time spent underneath: swlo.dll!SwTextFrame::FormatImpl (about 35 secs) Breakdowns from underneath that frame show the following frames with significant activity: - swlo.dll!SwTextFormatter::NewPortion (about 22 secs) - swlo.dll!SwTextFormatter::Underflow (about 12 secs - underneath NewPortion) - swlo.dll!SwTextIter::SeekAndChg (about 10 secs) - swlo.dll!SwTextSizeInfo::GetMultiCreator (about 5 secs) -- You are receiving this mail because: You are the assignee for the bug.