When placed next to a cactus, the head of bed remains same

When you place a bed next to a cactus, so that the foot of the bed is next to the cactus, the cactus and the feet of the bed will break however the head of the bed will remain. When you break that block nothing happens (the bed was dropped when placed next to the cactus)

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Code analysis: https://bugs.mojang.com/browse/MC-59303?focusedCommentId=308518&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-308518