How to disable "Exporting Data" popups?

I use audacity to break up my podcasts into 5 minute chunks with Regular Interval Labels and Export Multiple. Seeing as it takes 20 seconds for each chunk to export, I constantly get Exporting Data popups which i could accidentally stop by pressing enter. I’ve already disabled the edit metadata popups.

This is noted at - if you are a C++ programmer, please feel free to send us a patch or preferably a git pull request.