# MathJax formulas hidden behind text

I have noticed that MathJax formulas are sometimes hidden behind other text and not properly displayed. I observed this only when using HTML-CSS as MathJax Renderer. (For other options the same formulas were displayed fine.) I am on Windows, using Google Chrome Version 78.0.3904.70 (Official Build) (64-bit).

Maybe there are also other factors, but I have seen this in centered formulas that contained \text{...}. I also did some minor experiments with such formulas in the Formatting Sandbox.

Here are some examples, together with screenshots how the formulas are displayed to me:

$$a=\frac{A}{K}, b=\frac{B}{K}, c=\frac{C}{K}, d=\frac{dK}{K} \text{ and } n=\frac{N}{K}.$$

The MathJax code is: $$a=\frac{A}{K}, b=\frac{B}{K}, c=\frac{C}{K}, d=\frac{dK}{K} \text{ and } n=\frac{N}{K}.$$

I see this:

We put $$\overline D=\limsup_{n\to\infty}\frac{w_n}{\sum\limits_{k=1}^n w_k}\text{ and }\underline D=\liminf_{n\to\infty}\frac{w_n}{\sum\limits_{k=1}^n w_k}$$ where $$w_k\ge0$$ are the given weights.

The formula in this text is: $$\overline D=\limsup_{n\to\infty}\frac{w_n}{\sum\limits_{k=1}^n w_k}\text{ and }\underline D=\liminf_{n\to\infty}\frac{w_n}{\sum\limits_{k=1}^n w_k}$$.

This is how it is displayed for me:

• interesting behavior, if I open for inspection of code behind the scenes, I can scale all math and it partly goes away. but if I close inspection and refresh it comes back despite the scaling. chrome 78 something on a windows PC at the library – user645636 Oct 25 '19 at 12:45
• I get the same behavior in Chrome 78 on Mac OS High Sierra. It works fine in Firefox on that machine. I also checked on a Windows machine running Chrome 77 and it worked fine. Maybe this is an issue only on the new Chrome? – Mark McClure Oct 25 '19 at 13:15
• The recent Cross-Validated meta post What's going on with MathJax today? may be related to this issue. – John Omielan Oct 26 '19 at 0:56
• Reproduced with Brave (Version 0.71.104 Chromium: 78.0.3904.70 (Official Build) beta (64-bit)), no matter how much I scale the text. – darij grinberg Oct 29 '19 at 23:57
• – user645636 Oct 30 '19 at 12:49