Ignoring a feature only stays that way for the user's current session

[jidanni]

User sees a magenta feature that is obviously a mistake. User clicks it and then clicks "ignore feature." It is now 5:30 PM, and user wishes to turn off his computer and go home. However he cannot, as his browser warns him "Changes you made may not be saved."

Let's have another look at what the info button on "ignore feature" says:

Ignoring this feature helps us improve our machine learning. If you are unsure whether or not this is an accurate feature, feel free to leave it as is, nothing will be saved or lost. 👍

Well, if the user cannot "save" the fact that the feature is to be ignored, then he or the next guy will just encounter the feature again.

User really wants to go home so asks his co-workers what to do. They suggest hitting the Undo button, in the upper right.

OK, good. He hits it and Undo goes away, but Redo lights up... and... he still cannot close the browser without getting the "Changes you made may not be saved" warning.