Unexpected behavior when setting baseline in a +bmatrix

[lvjr]

Discussed in https://github.com/lvjr/tabularray/discussions/299

^{Originally posted by **swarn** August 26, 2022} I have a `+bmatrix` inside a `tblr`. As expected, the default baseline is in the middle:  When I set the baseline of the matrix, the text aligns, but the brackets do not:  The `nicematrix` package shows my expected behavior:  That works, but I enjoy `tabularray` and would be happier not to add another package. Code for all examples is below. Am I missing something?

Minimum working example

```tex \documentclass{article} \usepackage{amsmath,tabularray} \usepackage{nicematrix} \UseTblrLibrary{amsmath} \begin{document} \begin{tblr} { colspec={l c X[l]} } a & $\begin{+bmatrix} x \\ y \\ z \end{+bmatrix}$ & Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. \\ b & $t$ \\ c & $i$ & Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt. \\ \end{tblr} \vspace{1in} \begin{tblr} { colspec={l c X[l]} } a & $\begin{+bmatrix}[baseline=t] x \\ y \\ z \end{+bmatrix}$ & Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. \\ b & $t$ \\ c & $i$ & Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt. \\ \end{tblr} \vspace{1in} % Nicematrix version \begin{tblr} { colspec={l c X[l]} } a & $\begin{bNiceMatrix}[baseline=t] x \\ y \\ z \end{bNiceMatrix}$ & Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. \\ b & $t$ \\ c & $i$ & Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt. \\ \end{tblr} \end{document} ```

[lvjr]

This bug should has been fixed. You may download the latest package file https://github.com/lvjr/tabularray/raw/main/tabularray.sty and test whether there are other problems.