MySQL Workbench 6.3 (Mac) hangs on simple queries

Question

I am using MySQL Workbench 6.3.7 build 1199 CE (64 bits) on a Mac with OS X Yosemite 10.10.5. I am connecting to an Amazon RDS MySQL instance.

When I enter a simple

Answer 1

To resolve this issue, I downgraded MySQL Workbench to 6.1. Now I am able to run my query and it doesn't hang.