LaTex formula shows lower in whole sentence in the new version (0.11.13).
It seems to be related to the height of the formula. So most cases happens in simple/short formulas.

LaTex formula shows in reasonable position in sentence.
type $a$ or $c$ in a sentence.
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Also experiencing this...

Also appears on Linux. Maybe the vertical-align need to adjust a bit.
Same here, Boostnote 0.11.13, macOS 10.14.2.
Some other bugs related to direct symbols into LaTex.
Trying to input all symbols into LaTex directly, but some of them are invalid.
For the negated relation symbols, the position of splash is not right, which makes it weird.
input these:
### Greek Letters
$Α$
$Β$
$Γ$$Δ$
$Ε$
$Ζ$
$Η$
$Θ$
$Ι$
$Κ$
$Λ$
$Μ$
$Ν$
$Ξ$
$Ο$
$Π$
$Ρ$
$Σ$
$Τ$
$Υ$$Φ$
$Χ$
$Ψ$$Ω$
### Relations
$≫$ $≪$
$⋙$ $⋘$
### Negated Relations
$≮$ ≮
$≯$ ≯
$≰$ ≰
$≱$ ≱

Another one is space in LaTex
Some of them will show error, some look not like a equation.
### Second Row Space
$aa$
$aa $
### First Row Space
$aa $
$aa$
### Both Row Space
$aa $
$aa $

Some other bugs related to direct symbols into LaTex.
Trying to input all symbols into LaTex directly, but some of them are invalid.
For the negated relation symbols, the position of splash is not right, which makes it weird.
input these:### Greek Letters $Α$ $Β$ $Γ$$Δ$ $Ε$ $Ζ$ $Η$ $Θ$ $Ι$ $Κ$ $Λ$ $Μ$ $Ν$ $Ξ$ $Ο$ $Π$ $Ρ$ $Σ$ $Τ$ $Υ$$Φ$ $Χ$ $Ψ$$Ω$ ### Relations $≫$ $≪$ $⋙$ $⋘$ ### Negated Relations $≮$ ≮ $≯$ ≯ $≰$ ≰ $≱$ ≱
Acturally if I input $\Alpha$ or $\Beta$ and some other greek letters, this will show KaTex parse error.
Maybe it is related to the previous bugs about directly input.
I have also noticed this bug on my notes, all the Latex expressions within the text are not aligned with it and are displayed lower.
Also have this "lowering" bug:

OS X 10.10, Bootnote 0.11.13
Same "lowering" bug on Linux Mint 19.1 with Boostnote 0.11.15:
Text : This is a almost aligned $M$ but this is not aligned at all $m$
Result :

Same "lowering" bug on Ubuntu 16.04 with Boostnote 0.11.15 when using together with Chinese:
Text: 注意这里的 $x_text{label}$ 是经过logSoftMax运算后的数值
Result:

Also have this issue. For a workaround, I used \vphantom:
$x\vphantom{^0}$ and $y\vphantom{^0}$
Same here, Boostnote 0.11.15 on macOs Mojave

@boostio has funded $40.00 to this issue.
@ZeroX-DG It's a bug duplicate of #2922
@kazup01 has cancelled @boostio's funding for this issue.(Cancelled amount: $40.00) See it on IssueHunt
Most helpful comment
Also have this issue. For a workaround, I used
\vphantom: