Swap doesn't work with commented code

[kuator]

Describe the bug
Swap doesn't work with commented code

To Reproduce
Download minimal init.lua: https://gist.github.com/kuator/10f7898c6e15c1c5edf54aba6eb9bd44.
Run:

$ mkdir ~/.config/repro
$ cd ~/.config/repro
$ wget https://gist.githubusercontent.com/kuator/10f7898c6e15c1c5edf54aba6eb9bd44/raw/fbf8f79460d870da11d2ea53b1050e07f695f476/init.lua
$ NVIM_APPNAME=repro nvim init.lua

Jump to the test_code, specifically line 118, try to do a swap, it does nothing, swap works on main though.

Expected behavior
Swap happens

Output of nvim --version
NVIM v0.12.0-dev-347+gbee45fc0e7
Build type: RelWithDebInfo
LuaJIT 2.1.1744317938
Run "nvim -V1 -v" for more info