Bridge is not writing Metadata to TIFF Files!

@AxemanGraphics 

OK, try a test similar to the following...

On your desktop, create a folder called 'test'

Inside that create 2 sub-folders, 'Folder 1' and 'Folder 2'

Inside each of the two folders, copy/duplicate 1 or more problem files into each folder (always work on copies until you are sure of what you are doing).

test
   Folder 1
      test 1.jpg
   Folder 2
      test 2.jpg

I'm using JPG files, but you will use TIF.

Now we'll add the keyword 'test' to the files.

If you have installed ExifTool on your Mac, open up a new Terminal.app window and paste or type in the following command line code:

exiftool -overwrite_original_in_place -subject=test -r 

Although you can't see it above, you must have a word space after the final -r flag/argument. You can see this in the screenshot below.

Then drag the parent top-level 'test' folder from the desktop into the Terminal window to add the folder path so that you don't have to manually type it in:

Then you can press return to execute the command line code. If successful, you should see something like this:

Now you can try using Bridge on these images to see if you can now work as expected. ExifTool will rewrite/restructure all metadata, which can fix inconsistencies in your files.

There are additional flags/arguments that can be added, such as to only process TIFF files, or to ignore various named folders under the top-level/parent directory being processed. You may not wish to add a keyword such as test, you may prefer to add an Adobe Bridge label or rating using ExifTool, there are many possibilities.