Protected Tags are not being protected

I have a tag called “#My_Updates” it has a few sub tags under it. I want it protected, so I have done so, using the protected tag field in the ankihub website, I have attached the screenshot for that below.

However, the tag would get removed after a few days or weeks, whenever that card would be updated.
I have looked up similar questions, but couldn’t seem to find a definite answer to it.
I am sure that this is not a general problem, else it would have been reported much more, so I just want to know what am I doing wrong & what can I do to prevent this from happening?

Screenshot 2023-05-29 182023

Are you ensuring everything is case sensitive and matching?

Yes, I have checked it again & again
I have attached a screenshot of it as well
I want to protect the subtags, but as per the ankihub directions, I only need to write the parent tag & that’s what I have done.

Screenshot 2023-05-30 211312

I wonder if it’s related to having the # symbol in it. I know * was causing issues in the past. Can you try changing that and see if it fixes it for now? (If so, please let us know so we can look further into that)

@jakub.f have any thoughts on what might be going on here?

I am monitoring it for now, I will let you know if there is any change.