I work with Photoshop 23.4.2 on Mac/BigSur and Windows10.
After one of the latest Photoshop updates, something has changed... for the worse.
I work with tile textures and very often use Copy - New Document - Paste.
Now the new document does not take the measurements from the Clipboard, but keeps the measurements from the previous New document (see screenshot).
In order to get the right measurements I have to click one of the previous document icons and then the clipboard icon, the last one in the list.
I tried with Photoshop 22.5.6 on Mojave and it works well, the New document keeps the right size of the last copied Clipboard.
Another thing I don't understand well, but it is not an issue, is the dark blue guide. I call it that because until recently the guides were only light blue by default, but now the last one that is placed is dark blue and it stays that way until you "deselect" it by clicking on the rulers (or create a new guide), and so it turns light blue. As long as it remains dark, if you press the Delete key the guide is deleted (and in the Story I read "Cancella guide selezionate", Delete selected guides).
I noticed this because I often use guides to define an image area to copy, cut or delete, but when I deleted it would disappear the dark guide instead of the selected frame.