optionset setting for any Views display will apply to all other displays

Try Slick Example

It has 6 optionsets on a view.
Clone it, and adjust.

If any valid issue, not on your own end, it is likely core Views, since the sample is fine for years.

Before cloning, try saving one display at a time, who knows the latest core has broken its persistent widzard cache. In that case, only if you can replicate it with non-slick view, please report it to core.

Let me know?

I just remembered, it must be on your end :)

You must select Apply to the current display (block or page) for the persitent cache to work.

Confirm?

"You must select Apply"

Yes, of course. I am clicking Apply and then saving the view after each configuration change. This is not a case of user error :)

I installed the Slick Example view. However, this view does not prove the bug doesn't exist. It only proves there are situations where it doesn't happen. But the bug is easy to reproduce. I have provided clear steps to reproduce the bug, and am able to reproduce it myself, over and over. It only takes a minute to create a view that reproduces the bug. Please follow the steps I've provided.

My Drupal core version is 9.5.7.

I think I just found the issue. I'll provide more information shortly.

This is not a bug. I misunderstood how the views display settings are applied. The opportunity to choose between "All displays" and "This block" only comes when we choose the format. If we choose "All displays" at that point, then any changes to the settings for that format will also apply to other displays (that haven't been overridden). This is normal behavior for Views.

The "fix" in my cases is to change the format to something other than Slick Carousel, and then apply and save, and then change the format back to Slick Carousel -- at that point we have the opportunity to choose "This block" so that subsequent settings changes won't affect the other displays.

Glad we are on the same page :)

Thanks for the follow up.

Automatically closed - issue fixed for 2 weeks with no activity.