Please get in touch with us at firstname.lastname@example.org or any of the other support channels – https://helpx.adobe.com/support.html . Please give a reference to this post so that we can identify you.
Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.
Thanks & Regards,
An error occurred while saving the commentCharlelie Jourdan commented
Same here - latest version (CC 2018)
on a MacBookPro 15" late 2013 - build 11,3
High Sierra 10.13.3
2.3Ghz Intel Core i7 - 16Gb RAM - Nvidia GT750M