I already submitted an in-game bug report regarding this bug.

 

Although I haven't checked the other missions, I'm suspecting that they fiddled with the database so some of the other mission rewards might have changed as well.

 

Mandalorian Mercenaries - Cost: 640

Rich Yield: Grade 2 Underwold Metals

 

Before Patch Returned: 8 Mullinine (non-critical)

After Patch Returns : 4 Mullinine (non-critical)

 

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One Last Job - Cost: 340

Abundant Yield: Grade 2 Underwold Metals

 

Before Patch Returned: 4 Mullinine (non-critical)

After Patch Returns: 4 Mullinine (non-critical)

 

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Working for the Kubaz - Cost: 265

Moderate Yield: Grade 2 Underwold Metals

 

Before Patch Returned: 2 Mullinine (non-critical)

After Patch Returns: 2 Mullinine (non-critical)

As near as I can tell, all non-crit Rich or higher missions are only giving half the rewards since 1.4