I currently have a problem regarding our Managed metadata field. At this point, our field is accepting invalid terms in the term set but is a valid term in the term store. Below are screenshots that would further explain:
This is my current setup for my term store
The 2nd image shows the new item in the list, the alliance field points to the Alliances term set.
In this 3rd image, I've entered the term coming from the 'Industries' term store. It did "validate" by the red colored text font.
but when you press the save, it saves successfully.
I believe this shouldn't be the case and I'm not sure as to why this is the behavior and if this is indeed a known bug for managed metadata. Let me know if you need more information. Appreciate all the help I can get!