Why has my Windows 11 search popup background turned white?

Everything seems fine except for the background color of the search window when "I click the search bar below" or to search something from there as seen in the screenshots. Start menu window color is ok, File Explorer is ok, but not the Search Window. Changing the contrast theme works in “Settings > Accessibility” but I don't that that's the main issue as I didn't change that, it just suddenly became like this or probably I press something I didn't know, the expected result is that it should also got the dark theme background on it. Already restarted my PC couple of times but the problem still persists. Hope someone has a fix for it.

Update 1: Tried changing to Light theme, it seems light theme as no issue, I mean the background is white but the font color also adapt but I prefer using Dark Theme and the white background problem still there when I turned it on.

Update 2: I already tried to toggle between light and dark mode but problem still persist. Additional info: My latest windows feature update was Windows 11, version 23H2 and the quality updates are all updated to the latest.

Screenshots:

A user on the Microsoft forums found a solution for this issue:

Windows Search gone white but everything is dark mode

User DaveM121 provides a command you can enter via PowerShell to create the "DisableSearchBoxSuggestions" DWord, which fixed the issue for me:

This problem is a bug that is being reported by many people at the moment, open PowerShell as Administrator again, then run this command and press Enter, then restart your PC to apply the change.

New-Item -Path "HKCU:\Software\Policies\Microsoft\Windows\Explorer" -Force; Set-ItemProperty -Path "HKCU:\Software\Policies\Microsoft\Windows\Explorer" -Name "DisableSearchBoxSuggestions" -Value 1 -Type DWord -Force

Edit 1: Added details about the PowerShell command.

Edit 2: Quoted the instructions from the linked Microsoft forum post.