Trouble inserting characters
I am trying to insert a math symbol into some text (specifically, the symbol ∩ for intersection). I have tried this two ways. One is to use the character viewer on my Mac and double-click on the symbol I want to insert. When I do this I get a rectangle with an X inside it instead of the symbol ∩. This is exactly the method I used to insert all three of these ∩ intersection symbols in this post so the glitch specifically has to do with Photoshop. The second way is to insert the symbol into a Word document, and then copy and paste the symbol. Again, I get the rectangle with the X inside it. I am running the latest version of Adobe Photoshop CC 2019 and Mojave 10.14.2 if it matters. Suggestions?

