When a squid is on the ground, it looks to slowly slide across the ground and then teleport back to the original place, then repeat when in reality, its not moving at all. Stupid squid. Also, this was in Pre 4 but Searge said there were no changes from Pre 4 to 1.9 release so I am assuming this is in the full release.
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Thank you for reporting but this is a very similar issue to MC-936, which includes all issues with Squids being in wrong locations.