Squids through spawners aren't disabled, the spawner has to be within 44 - 64 y co-ordinate for them to spawn (not 100% accurate, but within that area).
They didn't disable spawn eggs, they're just bugged. Squids only spawn at 46-62 blocks from bedrock, so they're not disabled.
I advise using a spawner 46-62 blocks away from bedrock or asking a skygod to spawn in some. If you see me online, feel free to ask me to spawn in some for you. My ign is leadermelody. ^-^