I should have posted an indication on this side effect in the testing channel releases thread. Essentially, as is expected from time to time, the testing channel had a breaking update that was later fixed by the following release:
“N.B. as with the pool api scheduled scrub task fix, it will be necessary for users to delete and re-create all their existing scheduled snapshot tasks (post this pr) in order that their prior function (pre share api change) be restored.”
Hope that covers it. Upon the next stable release there is the intention to detail this requirement but I neglected to surface it for testing in the referenced thread.