Recently the following QC report was created:
Report No: 102419 (RAID: 289385) Status: Open
RibbonStyleActnCtrls: No dropdown arrows of Actiontoolbar buttons
I noticed it and included the changes necessary to make it work. Since the ribbon functionality uses additional properties on TActionClientItem, these can be set for normal menu items to get the desired outcome. These additional properties are ignored by existing styles.
An alternate solution is a source code change that is also documented on the report. This source code change is not interface breaking, so you just need to copy the modified file into your applications folder.
As noted on the report, a ribbon style won’t work if the user selects the option in the ActionManager to use “large” images. This is due to the large button size on the ribbon being three times the height of a small button, instead of two that the ActionManager expects.