Nested one-line snippets work abnormally

[pilgrimlyieu]

Actual behavior:

Related snippets

snippet '(?a)\blm' "行内公式 Inline Formula" Ar
$$1$ $0
endsnippet

snippet case "Cases 环境 Cases Environment" w
\begin{cases} $1 \end{cases} $0
endsnippet

That is, sometimes* the cursor will select the outer placeholder if inner placeholders are jumped out.

*: Sometimes it works normally.

Besides, if snippets are multi-line snippets, it seems to work normally.

For example

snippet dm "行间公式 Display Formula" Ab
$$
$1
$$
$0
endsnippet

snippet case "Cases 环境 Cases Environment" w
\begin{cases}
    ${1:${VISUAL}}
\end{cases}
$0
endsnippet

Maybe related to the situation 3 of #1472?

Steps to reproduce

1. Add above snippets
2. Type as the GIF demonstrates
3. Then sometimes it will work abnormally like this

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• Operating System: Windows 10
• Vim Version: 9.0
• UltiSnips Version: 3.2
• Python inside Vim: 3.10.4