For custom file size restriction of 1mb, system gets hanged and does not throw error

Hi Team,

If we give File size restriction of 1MB, then expected behaviour is system should throw error that max file size exceeded.

Currently in 8.6 Upgraded DEMO instance, when we try to upload file with size > 1MB with file size restriction of 1MB , then it tries to upload file and system gets hanged instead of throwing error.This issue is happening with https PIA URL even in 8.6 DEMO and as expected throws error if file size >1MB is uploaded with http URL.

If there is no file size restriction then as expected file gets uploaded with both http and https PIA URL in both 8.6 DEMO & 8.6 DEV/SIT etc.