Custom Perspective session properties not exported

[joe.friedrich]

Might be related (If they can't be saved, they probably can't be exported):

Failing to save session scripts and custom properties

I am also having this issue. In perspective I can create a SESSION CUSTOM property like I can on any other view, but I cannot save this change. Saving shows ‘No changes to save’ in the bottom left corner and closing and opening the designer wipes any custom session property I added. The workaround, restarting the ignition server, did not work for me as of the latest build `8.0.0-beta0 (b2019032002)