User Interface On-Screen Size

@Mystic_Raindrop154A your screenshot shows that you are looking at the program folder for Elements 2025.  You must double-click on that blue folder icon (which confuses many users because it is not the normal yellow folder icon used by most other programs).  Then you must right-click on the file named PhotoshopElementsEditor.exe to get to the correct Properties dialog.

@David33614039uahd, again you have not answered my questions.

1.  What is the pixel resolution of your problem monitor?

2.  Do you have it set to the recommended resolution in Windows>Settings?

3.  Does your computer have more than one GPU?

Have you tried going to Edit>Preferences>Display & Cursors and changing the options for High Density Displays?

@Dr Lobster, please stop marking every reply in this thread as Correct.

@David33614039uahd, while a picture is normally worth a thousand words, it doesn't help us if you don't say which screenshot is your laptop and which your desktop.  You also are not answering my specific questions.

@David33614039uahd, you still haven't said how Elements 2024 is different than earlier versions or fixes.  Nor have you given any detail about the terrible proportions.  Do you mean the window dimensions or the UI scaling?  What is the size of your larger monitor?   

Do you have more than one GPU?  If so, disable the Intel internal GPU and see if the suggestions for UI scaling work (if that is what the problem is). 

@Mark305777580kh6, the Adjustment panel is dockable.  So you can click on the top bar of the panel and move it wherever you want.  You can also move it over other panels and dock them together.