Are you checking in the EXACT SAME BLOCK, in both Xtreme and the WordPress Theme and seeing that difference ?
If so, please tells us Which Block and Which WordPress theme you are using so @weaver can check.
A theme should not change what a block displays. Make sure you are not missing a setting in the block. Some blocks have an option to show a basic set of options or an extended set, make sure you did not simply missed that option.