all metadata is there as expected - checked with Exif Tool
I open this file in Color Efex, edit and save.
Expected result - my Metadata does not change
Actual result:
Creator: Siegfried Bräuer is changed to “Siegfried Bräuer _” (inlcuding the quotation marks)
Lens model etc… disapears
see screenshots for detail.
There are 3 screenshots with all the data shown in Exif tool for the Export from DPL
and there are 2 screenshots only with all the metadata left after Color Efex - the rest of the metadata is gone hence only 2 screenshots.
These problems also occur in the Windows release when loading the exported TIFF back into PhotoLab. (My own report was for DxO Nik Collection 2018 1.1.) It probably doesn’t happen with all RAW file types or programs, as they use EXIF differently.