Instance settings not being respected when setting an upload limit in Forms

Issue

When setting a value above the default (5) for the allowed upload limit for a guest user in the instance settings, my form is not accepting more than 5 submissions
In order for this behavior to be achieved, I need to set this value in System Settings
However, if I want this configuration to be only at the level of one of my instances and not in the environment as a whole, how can I ensure that my configurations are respected?

This behavior is an error identified in the Portal.
To fix this behavior, please request a Hotfix with LPS-193126 to resolve the issue.

If the hotfix is required for these concerns, please create a support ticket requesting the hotfix by attaching the patch details.
Applying a Hotfix will guide you to install the Fixpack/Hotfix in your environment.