The title says it all!
In my case I realised my Hint did not help me remember my Password.
Once I eventually got logged in hours later…
I have gone into the web vault to improve my Hint.
I cannot update my Hint as there is only a Change Password and it forces a session logout on all devices.
This serves no purpose.
Sorry but the hint is just a hint, there really is no other security it needs to interact with and should be separately updateable.
Maybe this is to ensure that the person who writes the password hint actually knows the master password.
you have to be logged in to access this screen.
no reason why a password re-prompt couldn’t be used.
but no need to change the password.
I see what you’re saying, now. But it’s simple enough just to re-enter your original password in the password field, and just change the hint.
This cannot be done now. Now if I go to change the password hint I “have to” change the master password as well. Because the interface throws an error - current and new password cannot remain same.
Hello and welcome to the community! 
For what it’s worth, you can change your password to something like oldpassword0, then log in immediately again and change it back to oldpassword. It’s important that:
ps: I also dislike the hint change interface. Having to provide the password to change the hint is a good idea, but having to jump through hoops like this seems silly.
I agree, and it sounds like this would be a great topic for a Feature Request.
And while I have the floor, I would like to take the opportunity to promote another hint-related feature request: Please expand the "Master password hint" maximum number of characters allowed…
Of course, all that gymnastics can be done 
. But the reason I made the comment here is that this has been turned into a truly worse experience and is silly as you have said.
I have the same issue. I want to edit the PW hint I created to better help me remember my PW.
Do I understand correctly that three years after this topic was posted, there is still no way to do so? Or is there a solution?
@Wardy Welcome back!
Well, FWIW, there is at least this workaround (when you don’t want to change your master password): change the master password temporarily to something else → then change your master password back to what it was + type in your new master password hint.
(If you would accept a master password change, then it’s only one step: change the master password + enter the new hint.)
Before you would do that: make a JSON or ZIP export of your vault as precaution. And always write down your new master password first, before changing it.
(and if you want to change your master password: an at least 4-random-words passphrase is the common recommendation)