Drops into Shulker
Collected drops go into an offhand shulker box
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Drops into Shulker
Drops Into Shulker

Drops-Into-Shulker makes collected drops go into a shulker if it's in the offhand. It follows all "normal" item rules. (Stack limits, Shulker stacking, etc...)
<b> COMPATIBLE WITH MODDED SHULKERS </b>, like Reinforced Shulker Boxes, etc. Thanks to Meshiest
If the Shulker inventory is full or the item cannot go into a shulker, it will be picked up as normal. Filtering pick-ups can be easily done by filling the shulker with empty stacks (1 item in each slot), just like the normal inventory.
If you encounter an issue please post it on the Issue Tracker.