I have fixed the problem for myself. I just had to change my NVIDIA 3d rendering settings to 'Balanced' instead of 'Performance Optimized'. I don't know if this works for other graphics drivers, but I know it was successful with NVIDIA.
I have had exactly the same problem. Only text is also affected, ie. text has outlines aswell as blocks, and some items. So far I haven't found a direct 'fix', but it may be because I changed my NVIDIA graphics driver '3d settings'.
Jackson Hines
I have fixed the problem for myself. I just had to change my NVIDIA 3d rendering settings to 'Balanced' instead of 'Performance Optimized'. I don't know if this works for other graphics drivers, but I know it was successful with NVIDIA.