Sometimes, kelp or seagrass can spawn one block under ice and it creates a little bug. You can see through ice and any update will break the kelp / seagrass, also, when they will break, the water will flow.
Attachment: https://www.youtube.com/watch?v=a2JClcGhgA4&feature=youtu.be
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violine1101
migrated
Thank you for your report!
However, this issue is a Duplicate of MC-125216.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
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