Agree, Dave - but unfortunately my Mac Pro can’t be updated past 10.7 because Apple didn’t include it in the upgrade path.
It appears I’ll have to buy a new computer at some point, but in the meantime the Xojo apps I’ve written for my own use are needed. As long as there is a work-around I’ll survive if Xojo doesn’t solve the issue, I guess.
Just wanted to add that the Xojo projects compile correctly and run un-modified from v2015. I have uncovered no other issues with 2016 on 10.7.5 than the “Save As”.