I built the setup in the attachment below, a trapped chest hooked up to a comparator -> repeater -> dispenser -> redstone dust loop. This causes an arrow to be fired every time it loops around. However, when the arrows push me back, the GUI for the chest disappears and it does not give out a signal, but visually the chest remains in the open state.
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this happens sometimes with regular chests as well.
Duplicate of MC-515.
Bumping this, as I don't believe it's been seen