Invoking custom prompts does not do the same as pasting the same prompt manuall

[MelSFNL]

Hi! I have been testing the tool by creating a custom prompt that is saved in settings.json (to create print statements for debugging in a template engine we are using). However the prompt does not seem to be run correctly when its invoked via @customPrompts /load.

Why doesn't it just exactly do the same as manually typing or pasting the prompt? Here is the prompt I have been testing (I have tested different wordings and with/without examples and escape characters; no result, running manually yields signficantly different results)

For each of the variables #selection, create labeled prints using {{ }} that display the values of variables in selected code, for debugging purposes. Example of input vs output: {% assign total_amount = total_amount*(loan_remaining_capital/loan_amount) %} should return: total_amount: {{total_amount}}\n loan_remaining_capital: {{loan_remaining_capital}}\n loan_amount: {{loan_amount}}\n

Thanks in advance