Sitecore Forms tracking might set the SC_ANALYTICS_GLOBAL_COOKIE after a form submission without the contact giving consent to being tracked, meaning that the explicitConsentForTrackingIsRequired attribute is set to "true" in the configuration of the website.
Note that, in this case, creating the SC_ANALYTICS_GLOBAL_COOKIE does not mean that tracking actually takes place. The SC_ANALYTICS_GLOBAL_COOKIE stores only the device ID that is issued by Sitecore, and it is not used if the contact has not consented to tracking.
To resolve the issue, consider one of the following options:
Alternatively, the SC_ANALYTICS_GLOBAL_COOKIE can be safely ignored because it does not indicate that tracking occurs.