If you fire a dispenser directly at an armor stand, it does not break.
The only way to make the arrow break the armor stand is to have the arrow slow down to a stop and then hit it it. This can be done by either firing an arrow upward and letting it fall back down, or firing an arrow into a block and then breaking it
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violine1101
migrated
Thank you for your report!
We're tracking this issue in MC-160813, so this ticket is being resolved and linked as a duplicate.
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