Setup

Version 4.3.0, on macOS 12.5.

Problem

I use a custom cwl for one of my packages. If I trim it to a couple entries, it looks like this:

\begin{boxcode}{lang}#V
\end{boxcode}
\begin{boxcode*}{lang}#V
\end{boxcode*}

Everything works fine with version 4.2.3. However, with version 4.3.0, the end markers of boxcode and boxcode* are not recognized, and the entire file after the first opening environment is marked as verbatim by the editor. (The opening marker is highlighted in pink as well, though no error is reported.)

Workaround

I've reinstalled version 4.2.3.