In Falkon About it still says QtWebEngine 5.15.2, probably it should be rebuild against newer QtWebEngine versions? It has issue with 5.15.4
Failed loading page
Something went wrong while loading this page.
No, 5.15.2 is correct, qmake.conf is patched to set to 5.15.2 to keep it compatible with the rest of Qt 5 and those that depend on exact versions.
What pages have issues? Kmail and Akregator correct?
Reddit (when scroll and content should be updated) other dynamic pages.
It can't open youtube.
None of your issues are reproducible on a normal, fully updated KaOS system (ofc with the [build] repo, otherwise no qtwebengine 5.15.4).
It's a bug https://bugreports.qt.io/browse/QTBUG-91773 some pages does not stop loading.
Falkon side https://bugs.kde.org/show_bug.cgi?id=434203
@demm can we have patch applied to 5.15.4?
Update to new version, everything seems fine.
But sometimes render crashes, needs reload due to https://bugreports.qt.io/browse/QTBUG-93744
@demm can we get this patch as well?
QtWebEngine 5.15.5 fixes remaining issues.