I cannot type messages in evolution since the very latest update. Other fields work but trying to type in the main email box doesn't work. When trying to type for a minute, the window goes blank and shows an error bar with "Something has gone wrong with typing the message". I get a bug report popup about something having gone wrong with webkitgtk. I sent the report about it, but I'm not sure how to access that.
I have these versions of webkit stuff:

ii  gir1.2-webkit2-4.0:amd64                                         2.20.3-0ubuntu0.18.04.1                  amd64        Web content engine library for GTK+ - GObject introspection data
ii  libqt5webkit5:amd64                                              5.212.0~alpha2-7ubuntu1                  amd64        Web content engine library for Qt
ii  libqtwebkit4:amd64                                               2.3.2-0ubuntu13                          amd64        Web content engine library for Qt
ii  libwebkit2gtk-4.0-37:amd64                                       2.20.3-0ubuntu0.18.04.1                  amd64        Web content engine library for GTK+
ii  python3-pyqt5.qtwebkit                                           5.10.1+dfsg-1ubuntu2                     amd64        Python 3 bindings for Qt5's WebKit module


And these versions of evolution stuff:

ii  evolution                                                        3.28.1-2                                 amd64        groupware suite with mail client and organizer
ii  evolution-common                                                 3.28.1-2                                 all          architecture independent files for Evolution
ii  evolution-data-server                                            3.28.3-0ubuntu0.18.04.1                  amd64        evolution database backend server
ii  evolution-data-server-common                                     3.28.3-0ubuntu0.18.04.1                  all          architecture independent files for Evolution Data Server
ii  evolution-data-server-online-accounts                            3.28.3-0ubuntu0.18.04.1                  all          evolution database server (transitional package)
ii  evolution-ews                                                    3.28.1-1                                 amd64        Exchange Web Services integration for Evolution
ii  evolution-plugin-bogofilter                                      3.28.1-2                                 amd64        standard plugins for Evolution (bogofilter)
ii  evolution-plugin-pstimport                                       3.28.1-2                                 amd64        standard plugins for Evolution (pstimport)
ii  evolution-plugins                                                3.28.1-2                                 amd64        standard plugins for Evolution
ii  libebackend-1.2-10:amd64                                         3.28.3-0ubuntu0.18.04.1                  amd64        Utility library for evolution data servers
ii  libebook-1.2-19:amd64                                            3.28.3-0ubuntu0.18.04.1                  amd64        Client library for evolution address books
ii  libebook-contacts-1.2-2:amd64                                    3.28.3-0ubuntu0.18.04.1                  amd64        Client library for evolution contacts books
ii  libecal-1.2-19:amd64                                             3.28.3-0ubuntu0.18.04.1                  amd64        Client library for evolution calendars
ii  libedata-book-1.2-25:amd64                                       3.28.3-0ubuntu0.18.04.1                  amd64        Backend library for evolution address books
ii  libedata-cal-1.2-28:amd64                                        3.28.3-0ubuntu0.18.04.1                  amd64        Backend library for evolution calendars
ii  libedataserver-1.2-23:amd64                                      3.28.3-0ubuntu0.18.04.1                  amd64        Utility library for evolution data servers
ii  libedataserverui-1.2-2:amd64                                     3.28.3-0ubuntu0.18.04.1                  amd64        Utility library for evolution data servers
ii  libevolution                                                     3.28.1-2                                 amd64        evolution libraries