I would feel frustrated as well if something isn't working as expected, @LT User. Let me chime in and provide some steps on how to fix screen issues in QuickBooks Desktop.

Before adjusting any Windows settings, let's change your display and view preferences in QuickBooks. 

1. Close QuickBooks Desktop.
2. Open the Windows Start menu.
3. Type QuickBooks into the search. Then right-click the QuickBooks icon and select Open file location.
4. In the folder, right-click the QuickBooks.exe file and choose Properties.
5. Proceed to the Compatibility tab.
6. Click the Disable display scaling on high DPI settings checkbox. You can also choose Change high DPI settings and then Override high DPI scaling behavior.
7. Click Apply and then OK.

If issue persists, we can adjust your view preferences in QuickBooks.

1. In QuickBooks, proceed to the Edit menu and choose Preferences.
2. Click Desktop View from the list and then the My Preferences tab.
3. In the View section, select the One Window option. 
4. Lastly, select OK.

If the same thing happens, proceed to Step 3 in this article: Fix screen issues in QuickBooks Desktop. 

You can also browse through this resource combine multiple transactions into a single record so QuickBooks matches your real-life bank deposits: Record and make bank deposits in QuickBooks Desktop.

Don't hesitate to visit again if you have further concern with resizing the Make Deposit window in QuickBooks. I'll be around to help you out. Stay safe!