fix(model): prevent error when displaying additional info form

[MyvTsv]

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

• It fixes !41911 & Can't add additional Information #571
• The injection form did not display if additional information was entered, which prevented data injection.

Screenshots (if appropriate):