Obsidian LateX rendering seems not working well

What I’m trying to do

Im trying to write a document which contains a lot of mathematical equations. I used latex to render math but at some point the equation (correctly written) stopped being rendered as shown:

This is very weird because the syntax is correct and sometimes the equation render fine

Things I have tried

I tried closing and reopening Obsidian and that fixed the problem, but if I change anything in the equation it might disappear again

Looking at your screenshot isn’t really going to help anyone help you.

Please paste all the math in a code block surrounded by four (or more) backticks like this

````
some important stuff
````

https://help.obsidian.md/Editing+and+formatting/Basic+formatting+syntax#Code+blocks

Ok, thank you.

Blocks that works:

$$\exists\ \epsilon > 0 : f(n) = O(n^{\log_{b}{a-\epsilon}}) \implies{T(n) = \Theta(n^{\log_{b}a})}\tag{1}\label{prima}$$
$$\exists\ k\geq0 : f(n) = \Theta(n^{\log_{b}{a}}\cdot{\log^{k}n}) \implies T(n) = \Theta(n^{\log_{b}{a}}\cdot{\log^{k+1}n})\tag{2}\label{seconda}$$

Block that isn’t working:

$$\exists \ \epsilon>0 : f(n) = \Omega(n^{\log_{b}{a+\epsilon}})+\eqref{regularity} \tag{3}\label{terza}$$

This is common MathJax problem and you have to stop using Live preview which is not compatible with MathJax.

See also this community plugin: No More Flickering Inline Math