Anamorphic footage and Exporting Out Screenshots

Hello,

I am currently in post production on a short film that was shot on the Alexa Mini LF and shot on Anamorphic lenses. I imported all the footage in and since the DP had set the footage to be stretched so no desqueezing was needed. Working with the footage has been fine in Premiere Pro. However, when I go to export a screenshot from the timeline, the image is squeezed and not in the widescreen image (image has been attached as well as clip tech specs). What is the workaround for this and why does this continue to happen?

Thank you in advance.