Currently, in the new cloud editor experience it is not possible to add alignment formatting for images nested within macros (eg. Scroll Title / Expand macro). Atlassian has an open issue for this behaviour which can be tracked here: https://jira.atlassian.com/browse/CONFCLOUD-68427
For images which are added normally (not nested on a page), it remains possible to apply alignment formatting. If, after this, the aligned image is copied and nested within a Scroll Title macro the following issue described in this ticket can also occur.
When adding a table within a Scroll Title macro to the new cloud editor, the table format from the edit view does not match the Confluence page view.
Steps to reproduce
Create a page and add a /Scroll Title macro
Nest a table within the macro and add some content to the cells
Center align the content in the table cells
Define the caption to be displayed Top and Centered
Expected result: The table fills the available page width with the caption centered in the Confluence page view
Actual Result: The table is aligned to the left with white space under the caption in the Confluence page view