Unable to render formula

[sstorey-nephila]

This latex is correct

$$
\underbrace{E[Y_i|D_i=1]- E[Y_i|D_i=0]}_\text{Observed difference in average health} = 
\underbrace{E[Y_{1i}|D_i=1]- E[Y_{0i}|D_i=1]}_\text{Average treatment effect on the treated} + 
\underbrace{E[Y_{0i}|D_i=1]- E[Y_{0i}|D_i=0]}_\text{Selection Bias}
$$

Yet to make it work here in github, I must escape _\ to \_\

$$
\underbrace{E[Y_i|D_i=1]- E[Y_i|D_i=0]}\_\text{Observed difference in average health} = 
\underbrace{E[Y_{1i}|D_i=1]- E[Y_{0i}|D_i=1]}\_\text{Average treatment effect on the treated} +
\underbrace{E[Y_{0i}|D_i=1]- E[Y_{0i}|D_i=0]}\_\text{Selection Bias}
$$

After escaping the underscores it does work
$$
\underbrace{E[Y_i|D_i=1]- E[Y_i|D_i=0]}_\text{Observed difference in average health} = \underbrace{E[Y_{1i}|D_i=1]- E[Y_{0i}|D_i=1]}_\text{Average treatment effect on the treated} + \underbrace{E[Y_{0i}|_i=1]- E[_{0i}|_i=0]}_\text{Selection Bias}
$$

Any idea if this can be resolved as it appears to be similar in root cause to the issue when trying to render this

$$
\begin{aligned}
Y_i &= \left \{
\begin{array}{ll}
Y_{1i} & \text{if } D_i = 1 \\  
Y_{0i} & \text{if } D_i = 0 \\   
\end{array} 
\right. \\
&= Y_{0i} + (Y_{1i} - Y_{0i})D_{i*}
\end{aligned}
$$

Resulting in this error
$$
\begin{aligned}
Y_i &= \left {
\begin{array}{ll}
Y_{1i} & \text{if } D_i = 1 \
Y_{0i} & \text{if } D_i = 0 \
\end{array}
\right. \
&= Y_{0i} + (Y_{1i} - Y_{0i})D_{i*}
\end{aligned}
$$

Change the latex like this

$$
\begin{align}
Y_i &= \left \\{
\begin{array}{ll}
Y_{1i} & \text{if } D_i = 1 \\\\
Y_{0i} & \text{if } D_i = 0 \\\\
\end{array} 
\right. \\\\
&= Y_{0i} + (Y_{1i} - Y_{0i})D_{i*}
\end{align}
$$

Amending the original \{ to \\{ and the \\ to \\\\ resolves the issue

$$ \begin{align} Y_i &= \left \{ \begin{array}{ll} Y_{1i} & \text{if } D_i = 1 \\\ Y_{0i} & \text{if } D_i = 0 \\\ \end{array} \right. \\\ &= Y_{0i} + (Y_{1i} - Y_{0i})D_{i*} \end{align} $$

Mathjax correctly renders the latex and I can extract it for use elsewhere.

With thanks

[muzimuzhi]

Duplicate of #16 . And, I am afraid that this cannot be resolved.

[zzqxaut]

why the latex on typora is different from the latex on github?