Is this inline $ \LaTeX $ working? Finally yes. For some reason the MathJax plugin stopped working and I reverted to the LaTeX2HTML plugin that works substantially better.
Can’t say I am a fan of this new editor in WordPress 5. Blocks popping up all over the place. Not sure I like the fact that each time I press enter I move to a new paragraph. Ah but at least $ \LaTeX $ is working. Not that I am going to type a whole lot of math but it is nice that at least I have that option.