When I query a table in MySQL Workbench, no results are shown, the result section is just blank, no grid or anything. However if I export the data, it is all there. Everything w
This is a known bug: link. Upcoming release 6.2.2 fixes this for OS X (Unfortunately, Linux version is still broken).
At least on my computer it's not dissapeared, just folded, and it's edge is almost merged with the edge of 'Action Output' block. When you move your mouse to that edge, the cursor starts looking like a dash with two arrows. Slowly move it couple of pixels higher until you catch the small 1px area where the cursor changes to a dash with a single arrow. Then catch it and pull : )
I've made a couple of photos to illustrate this.