Wrong variable selection position at the beginning of the line

[A4-Tacks]

my snippets define

snippet set "a = b;" w
${1:\$} = ${2};
endsnippet

my script

use x[y]z to selected y

set
# input enter
$[ ]= ;
# expect
[$] = ;

This problem occurs when the area to be selected is at the beginning of the row.

coc-snippets Version: 3.1.10

CocInfo

versions

vim version: VIM - Vi IMproved 9.0 9002070
node version: v21.1.0
coc.nvim version: 0.0.82-3014125 2023-04-11 14:28:54 +0800
coc.nvim directory: /home/lrne/.vim/plugged/coc.nvim
term: dumb
platform: linux

Log of coc.nvim

2023-11-10T16:53:03.657 INFO (pid:9428) [plugin] - coc.nvim initialized with node: v21.1.0 after 382
2023-11-10T16:53:07.655 INFO (pid:9428) [attach] - receive notification: showInfo []