Daniel

Custom environment not working (4.0.0-beta7)

2

### Issue Summary I have a custom environment defined (```divmatrix```) to write matrices with a divider in my webpage. This is what I want to achieve: ``` latex \left(\begin{array}{ccc|c} %...

Underbrace clipped for 3‑column matrices

2

### Issue Summary Placing a 3-column matrix inside ```\underbrace``` causes the brace to be clipped. It works correctly when the matrix has 1, 2, or 4 columns. ### Technical details:...