P: Move [Done] Button from beneath Histogram back to Toolbar [T]

When you are looking at or editing a picture, it's like reading, you go from top left to down right , so the location of the down button at the bottom right of the display made more sense ! Instead of that I have either to leave the mouse or to run all over to that edit button.. makes no sense if I just want to scroll down through the next panels, like HSL, curve, sharpen, lens, transform etc.. it can only perhaps make sense as long as you remain in the basic panel. 

The edit button may be in the same place, but it all the way to the top, instead in the more convenient place at the bottom. Also you wonder why the kept it for the HSL panel and the transform panel, if it was so important to them to fix something that was working.. 

@osovitskiy 

The "Edit" button is always in the same place too.

The beauty of the "DONE" button - it was always in the same place. While now "Crop", "Healing" and "Masking" panels are all of different size, so the "Close" button is always in the different location and in case of "Masking" you might even need to scroll. Again all these modes are called with different hotkey combination, so I have to remember what key combination to use.

While "Done" was always there, always the same place, and it was a unified solution to exir from all the modes.

Adobe has to bring it back. Though there are multiple ways to achieve the same, the "Done" was the most convenient one.

Plus when you want to click on the new edit tool, you have to move your hand all up to the top, a place where you aren't usually when your editing is finished : most of the time, I scroll down to the next edition dialogue, like the sharpen dialogue box or the transform tools.. 

Using the esc taste instead of the straight forward old "done" button is an heresy: usuall hothead Esc taste is used to cancel the last editing step ! 

It is [Undo] that cancels the last editing step.

[Esc] or [Cancel] generally prevents a new step, that is already in progress, from completing. And generally some sort of [OK] or Enter or [Done] action causes it to complete. But in LrC individual edit actions apply immediately as we do them - there is no confirm / cancel step involved.

Another standard usage for [Esc], is instead to exit from a task prompt that would otherwise auto-repeat. Enter is commonly co-opted too, to effectively do the same thing. For example: telling LrC that we are finished with doing cropping for the moment.

Sometimes we find ourselves two levels deep: we may exit from editing a particular mask (say), then we may separately exit from the Masking mode altogether. But e.g. to change which Mask or mask component we are editing, we just click to activate the different one - no need to first deactivate what we were working on before. And if in Masking mode we click on the icon for another tool - say, Heal - we'll switch to that immediately. It doesn't matter at all that we haven't positively closed Masking mode, in that case.

So to return to normal editing, we'll need to stop being in a different tool. The conceptual re-framing of normal editing as just another choice of working mode, becomes explicit with the new Edit icon. So now as an alternative to declaring what we want to stop doing - we can instead declare what we want to do next: general edits. That is IMO more consistent with how we already e.g. switch directly between Crop and Heal. And who knows what future developments of the interface may get built off this new foundation (just my own private speculations there).

This all reminds me of the interface idea sometimes referred to as "radio buttons". To switch modes on an old fashioned FM-AM radio, pressing the AM button in also makes the FM button push out. This is not done as an optional convenience, but necessarily. It's a single action, in effect. It may be possible to permit releasing the FM button without also selecting AM at the same time - but this would not be a precursor to pressing AM, since doing so would disable FM anyway. It would just be a way of turning the whole radio off.  LrC does not go to that extreme; it still assumes you will want to do general editing by default, when no particular other tool is engaged.

Sorry for the typo : I meant to write "... usually the ESC taste is ..." but the spell checker decided other ways ..

Using the esc taste instead of the straight forward old "done" button is an heresy: usuall hothead Esc taste is used to cancel the last editing step ! 

So, first mention of the Done button being done in (but not by Adobe):

https://www.michaelrungphotography.com/post/lightroom-october-2022-updates-complete-guide#viewer-bb1vi

Sounds like many do not understand what DONE DID.