Object export bug

Hi IStonia,

The object export bug is still there when I use Clipboard Copy (obj), I got this error



I duplicate the mesh then export is ok.

I am using the latest version -> 2019-Apr-14

Edit:
Have to select all the faces and then duplicate and Break into one new object to work, Duplicate on the object level will give same error when try to export.

I couldn't produce the bug. Can you send me the scene file?

Yeah sure, I upload the file here

https://www.dropbox.com/s/u12wxryfnhniutw/cloth-02%20%28problem%20export%29.zip?dl=0

Thanks!

Edit:
sorry! I forgot to cleanup the scene, the one with problem exporting is named "import_Mesh07"

Fixed.
http://www.digitalfossils.com/Download/NVil-Apr-18-19.rar

That was quick! Thanks so much IStonia! 

Same issue here with latest build, it happens when I try to copy multiple objects at once

Try this and let me know if it is fixed.
http://www.digitalfossils.com/Download/NVil-Apr-20-19.rar

works good, thanks!