Lightroom 5.6 / CR 8.6 not recognizing my Canon 16-35mm f4 IS USM lens

Question

I have Lightroom 5.6, Camera Raw 8.6.
I'm using a Canon 5D Mark 3.   I had a Canon EF 16-35 f2.8 USM for years.  Under Lens Corrections / Profile I would use the Auto Setup and LR would detect the lens automatically.  
I switched to the EF 16-35 f4 IS USM recently, even with LR 5.6 and Camera Raw 8.6 the Auto Setup doesn't recognize the new lens.    I manually select Canon, then within the model drop down list - the EF 16-35 f4 IS USM does indeed show up.
I checked the EXIF data - it's listed as "EF16-35 f/4L IS USM" (notice the lack of space between the EF and 16.   However the profile is listed as "Canon 16-35 mm f/4 IS USM" (notice the space between 16-35 and mm).   Looking at the drop down list, this appears to be the ONLY lens listed with a space between the focal length and mm.
Not sure what the source of the mismatch is here.   I'm trying to figure out how to find the Lens ID in the EXIF info.
Ideas, suggestions?

Answer 1

If LR supports the lens natively then manually selecting the lens and doing a Save New Lens Profile Defaults shouldn't be necessary as Auto should work.  Rikk, since your LR screenshot says Custom instead of Auto I expect that you're seeing the same thing as the OP and may have already set your lens profile defaults, manually or having to select a lens profile manually seems less odd that it does to the OP.
In any case, I think there are two problems, or perhaps two different manifestations of the same problem:
1)  Looking at the EXIFTool LensInfo tag list the Lens ID is apparently 507 for this lens, but the Lens ID in the lens profile file from Adobe is 251 which corresponds to a Canon EF 70-200mm f/2.8L IS II USM lens:
http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Canon.html#LensType
It does not seem to be enough to change the 251 to 507 in a copy of the LCP file and put that file in the User's lens profile area.  I did this and Auto still doesn't work, although the 507 copy of the profile is found if I choose Custom and pick Canon.  Without the LensID = 507 lens profile existing, Custom / Canon chooses the 16-35 f/2.8 lens.
2)  If we select the supposedly correct lens profile manually, then there is distinct pincushion distortion in the door edge, and this distortion is actually slightly worse in the corrected image than in the original uncorrected image.  Here is the corrected image:
This makes me wonder if the correct lens distortion data is even in the lens profile file attributed to the 16-35 f/4 lens or its for some other lens.  An obvious suspect is the other lens profile with the LensID = 251, the 70-200 f/2.8 II lens, but if I choose that profile it does apply different corrections so the profile is not the same for that, either.
In any case, the proper profile is not being selected automatically and the distortion corrections seem off if the profile is selected manually.