I installed iode 6 beta, and now WebView does not work.
In developer options → WebView Implementation, it is just blank with no WebView implementation selectable, even if I have Android System WebView, Android System WebView Beta, and Chrome installed.
A restriction has been imposed in lineage here: webkit: SystemImpl: Filter out unavailable providers · LineageOS/android_frameworks_base@d20a3d9 · GitHub
This will be relaxed in the next beta (coming soon).