Hiya,
So after the 5.1 update, I have noticed that the wget package got removed.
This resulted in adblock being broken:
/usr/bin/wget: unrecognized option: no-cache
Apparently, the busybox wget is missing some options that the full wget has.
Snippet from the notification email (the one where kernel was updated to 4.14.193-1-8b9af84bd92487dbe3b82318bc09b670):
Removed package wget