Episodes Not Registering as Watched on Lists

Code of Conduct

• I have read and agree to the project's Code of Conduct

Where did you encounter the bug?

https://app.trakt.tv/users/minimyself/lists/fbi-watch-order?ignore_watched=true

But is also happening with other lists that are comprised of episodes.

Please describe the bug below

Lists of episodes don't register that episodes have been watched. Using the hide watched filter does nothing.

(Line included to denote split between watched and unwatched)

If show spoilers is set to no then episodes I've watched don't have the title blurred, but there's no other indication that the episode has been watched.
I use Google Chrome but I have also tried with Firefox and the same thing happens.

Additional information

Putting this report together I've realised that this may be to do with the removal of some features, as I've noticed the episode drop downs don't allow for adding to lists.

If this, therefore, doesn't count as a bug can it be made into a feature request that allows for the creation of lists of episodes. They have been incredibly helpful of keeping track of episode orders when it comes to watching shows that crossover and run parallel to each other.