Different block editing behavior in v5.5.1

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I've been busy porting a v5.4.2.2 site over to 5.5.1... recreating all the content manually as an exercise in learning the differences in v5.5, etc, and I've come across something that I'm wondering if anyone else has experienced (and which I think could be a bug in 5.5).

I've got a couple of blocks that I created that have a couple of fields for the user to enter information: a WYSIWYG content field with three sets of image selectors and some text fields for adding captions for the images... so the block editing window is fairly long.

In 5.4.2.2... when you're scrolled down the block editing window and click on the link to "Choose image" and pick your image in the File Manager, you are returned back to the same point in the editing interface from where you left.

In 5.5.1... doing the exact same thing, once you've selected your image in the File Manager, you're returned to the block's editing window, but it's scrolled all the way back to the top.

NOT a big deal... but the 5.4.2.2 way was MUCH easier and didn't require re-scrolling back down to where you were in the editor window.

Known issue? Bug? Feature request?!? :D

Thanks!

arrestingdevelopment