STR:
Open a panel (e.g. Functions List, Folder as Workspace).
Open the Find dialog and execute a command displaying the Search Results window.
Open the "Find in Search Results" dialog and run a search.

Result:
The panels GUI is messed up (background, no border, Search Edit Control).

Dark Mode:

Expected:

Notepad++ v8.5 (64-bit)
Build time : Mar 19 2023 - 23:56:22
Path : C:---notepad++.exe
Command Line :
Admin mode : ON
Local Conf mode : ON
Cloud Config : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 20H2
OS Build : 19042.985
Current ANSI codepage : 1255
Plugins :
ComparePlus (1.1)
HTMLTag (1.3.6)
MenuIcons (2.0.2)
PythonScript (2)
_CustomizeToolbar (4.2)