Description of the Issue

The Find dialog saves it's last position, thus being sometimes far away from the main Notepad++ application. Especially in multi-monitor environments. I often have to move Notepad++ to different monitors for various reasons (i. e. other workspace or a RDP connection related to my work in Notepad++ is on the screen I used Notepad++ beforehand). The Find dialog then may be opened on the "wrong" screen.

Steps to Reproduce the Issue

In a three-monitor setup, where the monitors rest aside

1. Move Notepad++ to monitor 3 (leftmost)
2. Open the Find dialog -> will be also placed on monitor 3
3. Close the Find dialog
4. Move Notepad++ to monitor 1 (rightmost)
5. Open the Find dialog -> will still be placed on monitor 3, leaving you wondering if it has even opened

Expected Behavior

The find dialog should always be placed on the same screen as Notepad++.

Actual Behavior

The find dialog stores it's absolute position making it sometimes detach from Notepad++.

Debug Information

Notepad++ v7.9.1 (64-bit)
Build time : Nov 2 2020 - 01:07:46
Path : C:\Program Files\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 2009
OS Build : 19042.572
Current ANSI codepage : 1252
Plugins : ComparePlugin.dll mimeTools.dll NppConverter.dll NppExport.dll PythonScript.dll XMLTools.dll