Turns out, Dan Harmon wasn't the only person that Chevy Chase has issues with on the set of Community. According to Vulture, on a recent episode of Sklarbro Country, Director Jay Chandrasekhar described an instance during the filming of season two's "Mixology Certification" where Chase was rather unpleasant to him. This can also be described as Chevy Chase just being himself.
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Chandrasekhar goes on say, "I actually like and love Chevy Chase," and that the actor came back after ten minutes and shot the scene as requested. Oh, Chevy. Always keeping 'em on their toes!
[via Vulture]