In an answer to this question I wrote the following LaTeX code:

$$L=\{w\in\{0,1\}^*:|w|\geq n\text{ and the $n$-th symbol from the last one is 1}\}.$$

The output of this code should include four different curly brackets (two opening, two closing), but they are not being rendered.

Inline LaTeX formulae including curly brackets show them correctly, though, at least the ones I wrote in the same answer.