Adobe Acrobat doesn't print certain fonts of PDF?

I already had this problem with Adobe Acrobat Pro and OSX Yosemite and was hoping that upgrading to Adobe Acrobat DC or OSX El Capitan would fix the problem but it still exists:

When I try to print certain PDFs with mathematical formulas from my university with Acrobat it happens very often that symbols such as "+", "-" and "=" aren't printed. They show up fine in the PDF but they simply aren't visible on the paper after printing them. The font that is being used is called SymbolMT. I have the regular Symbol font that came preinstalled with my Mac. My printer drivers are working properly since I can print the same PDF perfectly with Google Chrome or the Mac Preview app so I think this is an issue tied to Adobe and the fonts installed on my Mac?

I have the latest version of Adobe Acrobat installed and I'm using an iMac with OS X El Capitan.

Any tips?

Here is the PDF with the formula that causes the problem:

adobe_problem.pdf - DocDroid

That's how it's supposed to look like: