Hello, Today's (10 March 2026) update of libqt6webengine (6.9.2+dfsg-4+b2 to 6.9.2+dfsg-5) causes kmail to crash for me when reading any html formatted email messages. Basically kmail is unusable.
Downgrading to the following fixes the problem: libqt6webenginecore6_6.9.2+dfsg-4+b2_amd64.deb libqt6webengine6-data_6.9.2+dfsg-4_all.deb libqt6webenginecore6-bin_6.9.2+dfsg-4+b2_amd64.deb Andy. debsnap -d . --binary -a amd64 libqt6webenginecore6 6.9.2+dfsg-4+b2 debsnap -d . --binary -a all libqt6webengine6-data 6.9.2+dfsg-4 debsnap -d . --binary -a amd64 libqt6webenginecore6-bin 6.9.2+dfsg-4+b2 # sudo dpkg -i libqt6webenginecore6_6.9.2+dfsg-4+b2_amd64.deb sudo dpkg -i libqt6webengine6-data_6.9.2+dfsg-4_all.deb sudo dpkg -i libqt6webenginecore6-bin_6.9.2+dfsg-4+b2_amd64.deb

