Filmic Pro aspect ratio 2.39:1 is not retained in Adobe Rush

Hi All,

I have shot a video in Filmic Pro app in aspect ratio 2.39:1. I imported that video into Adobe Rush and did my edits and exported. The aspect ratio 2.39:1 is gone in the exported video and it looks 16:9. I tried all the available aspect ratios and transform options provided in Adobe Rush. But no luck. 

How to retain the wide aspect ratio 2.39:1 taken by Filmic Pro in Adobe Rush? Can you guide? 

Thanks for you help.