Same here. libFontParser.dylib    0x1b96ed330    redacted CoreText    0x1846676b0    TBaseFont::CopyTable(unsigned int) const + 160 CoreText    0x1846675a8    TBaseFont::HasTable(unsigned int) const + 36 CoreText    0x1845da710    TFont::SetOpticalSize(__CTFontDescriptor const*, CGFont*) + 124 CoreText    0x1845d257c    TFont::TFont(__CTFontDescriptor const*, double, CGAffineTransform const*, __CTFontDescriptor const*) + 320 CoreText    0x1845c66f8    TCFRefCTFont* TCFBase_NEWCTFont, __CTFontDescriptor const*, double&, CGAffineTransform const*&, __CTFontDescriptor const*&(__CTFontDescriptor const*&&, double&, CGAffineTransform const*&, __CTFontDescriptor const*&) + 100 CoreText    0x1845c6610    _CTFontCreateWithFontDescriptor + 104 CoreText    0x1845ce288    __CTFont const* CreateBestFontForCSS(anonymous namespace)::ValuesAreDescriptors(__CFString const*, __CFArray const*, unsigned short, unsigned int, double) + 476 CoreText    0x1845cdc64    __CTFontCreateWithNameAndSymbolicTraits + 600 UIFoundation    0x1890903c4    _UINewFont + 392 UIFoundation    0x188fdd674    +[UIFont fontWithName:size:traits:] + 24

Montery 12.3, same here. I have used an external DELL display as main screen for a long time, upgraded from macOS 11 to this version and screen hang, temporarily unplug the external screen's type-c line and reconnect it again works for me.