For on-premise installation, make sure to read the "Upgrading to 4.5+" section from the 4.5.0 release notes
Flow Execution Panel
- Not possible to do a 'Save as draft' when the Smart Form is invalid.
- Generate Document uses system default timezone instead of project timezone
- Flow Builder - Cannot add a metadata value to the 'Store in SharePoint'
- No longer possible to create a SugarCRM package
- Sometimes, the Sugar access token is invalid while it shouldn't be