When a bucket is used to collect either a water source block or lava source block, the bucket disappears from the inventory, but so does the source block. Another related issue I know of is when maps are used in survival mode, they do not generate and simoly disappear. I know this isn't ghost buckets, as I changed my right-click bind to a key to test. Please fix this, as this is quite an annoying error.
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We're tracking this issue in MC-275757, so this ticket is being resolved and linked as a duplicate.
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