This is an unfortunate side effect of the Export pane adopting the generic ArcGIS Pro dialog. This change was needed for performance as well as consistency. There is an enhancement request - ENH-000106949 - in the system if you would like to track this issue. I've passed your comments to the Content Management team working on this.
Sorry for any inconvenience.
Thanks for the feedback,
Thanks for getting back to me. Great to know this has already been spotted. Glad I'm not the only one relying on shortcuts! Do you know when the enhancement might be implemented?
Sorry, Ben, I do not know have a schedule for ENH-000106949. I encourage you to contact Technical Support and have them add your contact information to the issue. They can be contacted at https://support.esri.com/en/contact-tech-support.
I currently see four sites (customers/users) that are tracking this issue. The number of sites reporting an issue or asking for an enhancement is one of the metrics we use when setting priorities for future releases. Enhancements are also tracked at https://community.esri.com/community/arcgis-ideas.