We do not have tight integration with BeaverBuilder and Toolset's role is to supply the content and its BeaverBuilder module that does not display the background image.
I have suggestion for couple of workarounds:
- I can hide the column background image using CSS, so that you will have only one image to display
- you should build content template using Toolset Blocks, rather using BeaverBuilder.
- we can try to copy the HTML generated by Beaver Builder and try to replace the value with dynamic values using classic content template