Bug is self explanatory.
Camera goes through the tinted glass for whatever reason in 3rd person.
(I am using Optifine in the below clip, however I also tested this in vanilla after taking the clip and got the same result.)
MC-246980
Camera goes through tinted glass in 3rd person
Resolved
Duplicate
0
Hello Carson, thanks for the report! We're tracking this as MC-175866. This was not considered a bug by the developers; therefore, it is working as intended and won't be fixed.