Currently I want to include an issuePanel with Custom UI. The [viewportSize](https://developer.atlassian.com/platform/forge/manifest-reference/modules/jira-issue-panel/) is not set as the documentation states in order to achieve an automatic size. Instead, there is always a white bar with a ‘min-height’.
The ‘min-height’ is set on ‘div’ outside and the iframe self.
Is there a way to improve this without switching to Connect? Will this behaviour change?