Fix deferred enc/dec params and fallback (#6500).
Merge remote-tracking branch 'drebs-github/bug/6500_fix-deferred-enc-dec' into release/0.6.x
Fold in changes.
Merge tag '0.6.3' into debian/experimental

Tag soledad 0.6.3.
bump debian changelog to 0.6.3
Freeze debian version.